天眷通(tong)寶(bao),中國古代錢幣之一。金代早期(qi)鑄幣,因存世絕(jue)少,天眷通(tong)寶(bao)至今未見譜載。天眷通(tong)寶(bao)分小平和折二(er),平錢有楷,篆(zhuan)兩種書體。
天眷(juan)通寶(bao)折(zhe)二錢(qian)面文為楷(kai)體,直徑3厘米,重(zhong)約7.2克。天眷(juan)通寶(bao)平錢(qian)為楷(kai)書(shu)體,右旋讀,其中“眷(juan)”字多書(shu)一(yi)橫;而“通”字寫(xie)法(fa)頗(po)肖南宋“建炎(yan)通寶(bao)”之“點建”錢(qian)的寫(xie)法(fa),“寶(bao)”分作(zuo)三筆(bi),甚奇。該(gai)錢(qian)光背,棕(zong)褐色(se)包(bao)漿(jiang),字間(jian)有入骨銹(xiu),制(zhi)作(zuo)精整,應為官鑄(zhu)。“金代天眷(juan)通寶(bao)真書(shu)折(zhe)二”早年出(chu)土(tu)于河南省(sheng),原為泉屆名家收藏。
首先此錢(qian)(qian)“寧(ning)”字心外點長(chang)且無(wu)回筆,類鐵(tie)母(mu)寧(ning);其次,“通(tong)”頭呈三角狀,有(you)稱(cheng)“三角通(tong)”者;還(huan)有(you)“崇(chong)”字示部“小(xiao)”中間豎勾細且向右斜(xie)。具以上(shang)特征的(de)大字版(ban)“崇(chong)寧(ning)通(tong)寶”諸(zhu)譜未(wei)見。《崇(chong)寧(ning)通(tong)寶分類圖譜》第126頁249號(hao)是一枚(mei)標“鐵(tie)母(mu)寧(ning)”的(de)“崇(chong)寧(ning)通(tong)寶”,但不是大字版(ban),只有(you)第50頁099號(hao)、100號(hao)兩枚(mei)標“珍”的(de)錢(qian)(qian)才是約定俗成的(de)大字版(ban)“崇(chong)寧(ning)通(tong)寶”。然鐵(tie)母(mu)寧(ning)大字者僅見此一枚(mei)錢(qian)(qian)徑32.2毫米(mi),穿(chuan)徑8.5毫米(mi),厚3毫米(mi),重14.4克。錢(qian)(qian)體厚重,青銅質,銹色(se)古(gu)舊,開門的(de)老生坑。之所以謂之大字版(ban),是因(yin)此品錢(qian)(qian)文四字飽(bao)滿,寄廓接(jie)緣(yuan)。“寶、寧(ning)”二字冠(guan)點長(chang)且向左傾;長(chang)點“崇(chong)”;斜(xie)丁“寧(ning)”;高走(zou)“通(tong)”等,與被公(gong)認的(de)各譜均載的(de)大字“崇(chong)寧(ning)通(tong)寶”雷同。除錢(qian)(qian)徑略小(xiao)外,輪廓寬(kuan)窄、穿(chuan)孔大小(xiao)亦基本(ben)一致(zhi)。
《宋(song)史·食貨志》有(you)記載:“把生鐵打成薄片(pian),排放在貯(zhu)有(you)膽水的槽中,浸漬幾天,然(ran)后(hou)刮取析出(chu)的泥(ni)狀銅(稱作“赤煤”),入煉爐化煉。”
目前在市場上錢幣的(de)(de)作偽(wei)比較普(pu)遍。錢幣的(de)(de)作偽(wei)基本上有(you)兩種形式(shi)。一是(shi)改(gai)刻(ke)(ke),就(jiu)是(shi)用(yong)普(pu)通(tong)錢幣改(gai)刻(ke)(ke)成珍貴錢幣;另一種就(jiu)是(shi)臆(yi)造錢幣。
崇寧通寶是(shi)(shi)(shi)宋徽宗時期(qi)比(bi)較重(zhong)要的(de)錢(qian)幣(bi)之一(yi)(yi),因此要仿制它是(shi)(shi)(shi)很難的(de)。目前(qian)市場上(shang)作假一(yi)(yi)般有(you)兩種方式,一(yi)(yi)種是(shi)(shi)(shi)改刻(ke),就(jiu)(jiu)(jiu)(jiu)是(shi)(shi)(shi)用普通錢(qian)幣(bi)改刻(ke)成珍貴錢(qian)幣(bi)。另外一(yi)(yi)種就(jiu)(jiu)(jiu)(jiu)是(shi)(shi)(shi)造假。如是(shi)(shi)(shi)用假幣(bi)跟真幣(bi)比(bi)較,就(jiu)(jiu)(jiu)(jiu)不(bu)難發現首先從文字上(shang)看(kan),就(jiu)(jiu)(jiu)(jiu)沒(mei)有(you)瘦金體的(de)剛勁有(you)力,也缺乏御書體的(de)那種大(da)氣。再一(yi)(yi)個是(shi)(shi)(shi)看(kan)它的(de)鑄造,真錢(qian)幣(bi)鑄工精湛(zhan),在(zai)放大(da)鏡下也很難看(kan)出砂眼(yan)(yan),而假錢(qian)幣(bi)的(de)質地比(bi)較粗糙,沒(mei)有(you)質感,就(jiu)(jiu)(jiu)(jiu)是(shi)(shi)(shi)不(bu)用放大(da)鏡也能看(kan)出它的(de)砂眼(yan)(yan)。
1、看銅質
我國歷代古(gu)錢(qian)(qian)幣(bi)(bi)大多數是(shi)以銅(tong)(tong)合金形式(shi)鑄(zhu)(zhu)(zhu)造的(de)(de)(de)(de),因而(er)合金的(de)(de)(de)(de)成(cheng)份不(bu)同(tong)(tong),錢(qian)(qian)幣(bi)(bi)也隨之(zhi)呈現出不(bu)同(tong)(tong)的(de)(de)(de)(de)顏色。各(ge)時代的(de)(de)(de)(de)錢(qian)(qian)幣(bi)(bi)銅(tong)(tong)質是(shi)不(bu)同(tong)(tong)的(de)(de)(de)(de),又由于古(gu)代冶煉技(ji)術不(bu)同(tong)(tong),各(ge)地區鑄(zhu)(zhu)(zhu)造的(de)(de)(de)(de)古(gu)錢(qian)(qian)也各(ge)不(bu)相同(tong)(tong),每(mei)個朝代各(ge)有特(te)點。總的(de)(de)(de)(de)來講(jiang),用銅(tong)(tong)鋅(xin)合金鑄(zhu)(zhu)(zhu)造的(de)(de)(de)(de)錢(qian)(qian)幣(bi)(bi)呈黃色,銅(tong)(tong)錫合金鑄(zhu)(zhu)(zhu)造的(de)(de)(de)(de)錢(qian)(qian)幣(bi)(bi)呈青色。清(qing)代、民國時期,新疆、西藏等地鑄(zhu)(zhu)(zhu)錢(qian)(qian),用銅(tong)(tong)加少許鋅(xin)鉛,鑄(zhu)(zhu)(zhu)成(cheng)后錢(qian)(qian)體呈紅色。
先秦時期的(de)鑄(zhu)幣主要是銅錫合金鑄(zhu)成的(de),銅質呈(cheng)青紅(hong)色,質地較硬挺;漢代至唐宋時期的(de)絕大部分錢幣均為青銅鑄(zhu)造,其(qi)特點(dian)是銅色青白(bai)中(zhong)微(wei)帶(dai)淡紅(hong)。隋(sui)代的(de)五銖錢因為錫的(de)成份大,銅質泛(fan)白(bai),稱之為白(bai)錢。明嘉靖以(yi)后,開始(shi)向黃銅過渡,到天啟年(nian)間,用(yong)黃銅鑄(zhu)幣成為定制,錢幣色澤較之以(yi)前發生了較大的(de)變化(hua),可見,我國古(gu)錢鑄(zhu)造均有規律可循。
2、觀銹色
今所見錢幣(bi),無外乎(hu)兩種:一(yi)(yi)為(wei)發掘(jue)品(pin)(pin),一(yi)(yi)為(wei)傳世(shi)品(pin)(pin)。發掘(jue)品(pin)(pin)在地下埋(mai)藏了許(xu)多(duo)年,其表面都長滿了銅(tong)銹色(se)。傳世(shi)品(pin)(pin)也因空氣中氧化作用,表面有一(yi)(yi)層包漿。呈黑色(se)或銅(tong)色(se)。
銅(tong)(tong)是(shi)一種比(bi)較穩定的(de)(de)(de)金屬,在(zai)常溫下不(bu)(bu)易生(sheng)銹。要經過(guo)幾十年,甚(shen)至上百年的(de)(de)(de)時(shi)間才能生(sheng)成(cheng)氧化銅(tong)(tong)、堿式碳酸銅(tong)(tong)等(deng)。氧化銅(tong)(tong)因形成(cheng)的(de)(de)(de)顆位大小不(bu)(bu)同,呈現(xian)出黃、橙紅、鮮紅、深(shen)棕等(deng)不(bu)(bu)同的(de)(de)(de)顏色,俗稱“棗皮紅”、“栗(li)子殼”等(deng)。
出(chu)土的(de)(de)發掘(jue)品(pin)錢(qian)幣(bi)表(biao)面(mian)(mian)銹(xiu)(xiu)色(se)深深漬入錢(qian)幣(bi)里面(mian)(mian),因為(wei)其分子結構(gou)穩(wen)定、緊(jin)密,所(suo)以真(zhen)銹(xiu)(xiu)很不(bu)容易擦(ca)掉。而偽(wei)(wei)(wei)造銹(xiu)(xiu)色(se)則不(bu)然,偽(wei)(wei)(wei)銹(xiu)(xiu)多在錢(qian)幣(bi)表(biao)面(mian)(mian),稱作(zuo)“浮(fu)銹(xiu)(xiu)”或“粉狀銹(xiu)(xiu)”,比較(jiao)輕浮(fu),容易脫(tuo)落,往往經堿(jian)水(shui)一煮,做上的(de)(de)假銹(xiu)(xiu)便不(bu)堪(kan)一擊。發掘(jue)品(pin)偽(wei)(wei)(wei)銹(xiu)(xiu)作(zuo)法(fa)有兩種:(1)將偽(wei)(wei)(wei)品(pin)錢(qian)幣(bi)放(fang)人醋(cu)酸(suan)中,埋(mai)入地下,迅速生成銹(xiu)(xiu)色(se);(2)將偽(wei)(wei)(wei)品(pin)放(fang)入鹽鹵砂(氯化氨)、錫(xi)綠(硫酸(suan)銅)、醋(cu)的(de)(de)混(hun)合液中,把(ba)新銅腐蝕(shi)成舊(jiu)色(se),然后用膠水(shui)往錢(qian)幣(bi)上面(mian)(mian)粘銹(xiu)(xiu)。傳世品(pin)偽(wei)(wei)(wei)銹(xiu)(xiu)的(de)(de)作(zuo)法(fa)是把(ba)偽(wei)(wei)(wei)品(pin)用火(huo)熏(xun)黑(hei)、擦(ca)油、打蠟(la)。傳世真(zhen)品(pin)黑(hei)得(de)沉著(zhu)、光(guang)滑,而偽(wei)(wei)(wei)品(pin)則漂浮(fu)、發亮。
綠(lv)銹(xiu)(xiu)的形成又(you)有(you)南北方(fang)(fang)(fang)的差(cha)別,地(di)質帶酸性的地(di)區(qu)(qu)氧(yang)化(hua)程度也相應嚴重些。北方(fang)(fang)(fang)干(gan)燥(zao),雨(yu)水少,則銹(xiu)(xiu)色(se)堅硬(ying)。南方(fang)(fang)(fang)多(duo)(duo)(duo)雨(yu)水且潮濕,氧(yang)化(hua)層較松且多(duo)(duo)(duo)呈藍綠(lv)相間二(er)色(se)。例如南宋(song)錢(qian)幣(bi)(bi)發(fa)(fa)行于南方(fang)(fang)(fang),放(fang)出土于南方(fang)(fang)(fang)較多(duo)(duo)(duo),受地(di)理環境的影響,錢(qian)幣(bi)(bi)一般(ban)呈藍綠(lv)色(se)。如發(fa)(fa)現淺(qian)綠(lv)銹(xiu)(xiu)者(zhe),則此錢(qian)有(you)問題。如果入(ru)(ru)土區(qu)(qu)域燥(zao)熱,銅銹(xiu)(xiu)會(hui)呈紅(hong)紫色(se),但這種銹(xiu)(xiu)色(se)不會(hui)單獨存在(zai)于錢(qian)體上,必伴(ban)有(you)綠(lv)銹(xiu)(xiu)混雜在(zai)一起(qi),稱之(zhi)為“紅(hong)斑綠(lv)銹(xiu)(xiu)”。如發(fa)(fa)現錢(qian)體通為紅(hong)銹(xiu)(xiu),應屬假(jia)(jia)錢(qian),它是造假(jia)(jia)者(zhe)將偽品放(fang)入(ru)(ru)爐中(zhong)燒紅(hong)。這種仿銹(xiu)(xiu)膚淺(qian),明眼人(ren)一看便知(zhi)是假(jia)(jia)。
3、看鑄幣銘文
我國金屬鑄(zhu)幣(bi)(bi)的(de)一(yi)大特(te)(te)點(dian)就是有(you)銘(ming)文書(shu)寫(xie)(xie),可(ke)以說,每一(yi)種(zhong)錢(qian)幣(bi)(bi)文字的(de)字體各有(you)特(te)(te)征(zheng),不(bu)同(tong)時代的(de)鑄(zhu)幣(bi)(bi)銘(ming)文,有(you)不(bu)同(tong)的(de)書(shu)寫(xie)(xie)風格。根(gen)據(ju)這些特(te)(te)征(zheng)可(ke)檢(jian)驗是否為同(tong)時代的(de)錢(qian)幣(bi)(bi)。另外,在注重各種(zhong)銘(ming)文特(te)(te)點(dian)的(de)同(tong)時,還可(ke)找出(chu)銘(ming)文的(de)演變(bian)過程和(he)變(bian)化的(de)規律。這些規律和(he)特(te)(te)征(zheng)可(ke)以作為鑒定古錢(qian)真(zhen)偽的(de)依據(ju)。
先秦時(shi)期(qi)的刀、布、圜錢(qian)(qian)等(deng)金屬(shu)鑄(zhu)幣(bi)上的文字是(shi)用大篆(zhuan)(zhuan)來書(shu)(shu)寫的。秦漢時(shi)期(qi),銘文書(shu)(shu)體屬(shu)小篆(zhuan)(zhuan)范疇(chou),如(ru)半兩、五(wu)銖,但(dan)已有(you)漢隸風格,其中莽錢(qian)(qian)為懸針篆(zhuan)(zhuan)。魏(wei)晉南北朝(chao)書(shu)(shu)體復(fu)雜(za)。唐代(dai)錢(qian)(qian)幣(bi)為八分(fen)隸書(shu)(shu),唐代(dai)以后隸書(shu)(shu)盛(sheng)行(xing),五(wu)代(dai)十國(guo)主(zhu)(zhu)要為真(zhen)、篆(zhuan)(zhuan)、隸三(san)種。北宋錢(qian)(qian)幣(bi)則有(you)篆(zhuan)(zhuan)、隸、真(zhen)、行(xing)、草。自南宋光宗(zong)紹熙以后至(zhi)元、明、清,銘文均以楷書(shu)(shu)(真(zhen)書(shu)(shu))為主(zhu)(zhu),間或篆(zhuan)(zhuan)、隸書(shu)(shu)體。因(yin)為我國(guo)是(shi)一個(ge)多(duo)民族國(guo)家,鑄(zhu)幣(bi)銘文又有(you)蒙、滿、回、黨項(西(xi)夏)等(deng)少數民族文字。
鑒(jian)定一枚錢(qian)(qian)幣(bi)(bi)書體對(dui)不對(dui),首(shou)先要看(kan)它是(shi)(shi)否符合當時的(de)(de)(de)特(te)點;第(di)二(er)步才看(kan)它是(shi)(shi)否符合本品(pin)(pin)種(zhong)的(de)(de)(de)特(te)點。如:“益(yi)化”圜(yuan)錢(qian)(qian)雖為先秦大(da)篆,但它又同時有(you)齊文(wen)字(zi)的(de)(de)(de)特(te)征,不同于同時期其它各國(guo)(guo)之圜(yuan)錢(qian)(qian)文(wen)字(zi);發(fa)現有(you)東周、西周的(de)(de)(de)圜(yuan)錢(qian)(qian),若其錢(qian)(qian)文(wen)是(shi)(shi)小(xiao)篆書寫(xie),顯(xian)然(ran)是(shi)(shi)偽品(pin)(pin)無疑;秦半兩在古錢(qian)(qian)中(zhong)頗負(fu)盛(sheng)名,其錢(qian)(qian)體厚重,銅質精(jing)良,錢(qian)(qian)文(wen)隆(long)起(qi)而雄偉,半兩的(de)(de)(de)“兩”字(zi)中(zhong)“人”字(zi)高聳(song),如發(fa)現錢(qian)(qian)文(wen)扁平(ping)者,一看(kan)便知是(shi)(shi)偽品(pin)(pin);如見到清代寶(bao)(bao)源或寶(bao)(bao)泉(quan)(quan)局錢(qian)(qian)幣(bi)(bi)中(zhong)的(de)(de)(de)滿文(wen)書寫(xie)有(you)錯(cuo)誤(wu),則(ze)應考慮(lv)到寶(bao)(bao)泉(quan)(quan)、寶(bao)(bao)源二(er)局是(shi)(shi)清代國(guo)(guo)家級的(de)(de)(de)、最正規(gui)的(de)(de)(de)鑄錢(qian)(qian)局,滿文(wen)的(de)(de)(de)書寫(xie)絕不會出現錯(cuo)誤(wu),則(ze)所見之錢(qian)(qian)幣(bi)(bi)必屬偽品(pin)(pin)。
4、聽聲音
古錢(qian)(qian)(qian)古錢(qian)(qian)(qian)幣(bi)由于(yu)質(zhi)地的原因(yin),年(nian)代(dai)越(yue)久遠,火氣盡脫,氧化(hua)越(yue)嚴重,擲于(yu)水(shui)泥地面其聲(sheng)音(yin)也越(yue)喑(yin)啞。大概來(lai)說,先(xian)秦(qin)時期的刀、布、圜錢(qian)(qian)(qian)均是(shi)啞音(yin)。而明代(dai)以(yi)后的錢(qian)(qian)(qian)幣(bi),距(ju)今時間較近,還未受到深層的氧化(hua),聲(sheng)音(yin)則是(shi)清(qing)脆、響亮。如果(guo)我們把先(xian)秦(qin)時期的錢(qian)(qian)(qian)幣(bi)擲在地上,傳(chuan)來(lai)清(qing)脆聲(sheng),則此(ci)錢(qian)(qian)(qian)不太可靠(kao);反之,如果(guo)明、清(qing)錢(qian)(qian)(qian)幣(bi)擲地為啞音(yin),則也必將懷疑。
5、了解(jie)鑄造方法
我(wo)國古代鑄幣的鑄造,大概經(jing)過了子范(fan)(土、石,銅)、母范(fan)(磚、銅)、翻(fan)砂(sha)等幾個(ge)(ge)發展(zhan)階段。無論是真錢(qian)還是偽品的各(ge)種鑄造方法,都會在錢(qian)幣上留(liu)下相應的痕(hen)跡(ji)。這些痕(hen)跡(ji)就(jiu)是我(wo)們(men)今天鑒定(ding)錢(qian)幣真偽的一個(ge)(ge)有力依據(ju)。
6、聞氣味
此種方法是古錢(qian)鑒定中最(zui)簡單(dan)的一種。因為偽(wei)品(pin)錢(qian)幣(bi)多是用(yong)化學物質來偽(wei)造裝飾,往往會散(san)發出(chu)一種難聞的、刺鼻的化學性怪味(wei),而真品(pin)錢(qian)幣(bi)則(ze)沒有這種怪味(wei)。
7、觀版別
從版(ban)別(bie)上辨(bian)別(bie)古錢(qian)最主(zhu)要的(de)(de)辦(ban)法是(shi)除了多看錢(qian)譜之外,必須(xu)要多接觸實(shi)物,以熟悉各個朝代的(de)(de)錢(qian)幣(bi)(bi)(bi)真(zhen)(zhen)品(pin)。不但要注意珍(zhen)稀品(pin),更(geng)要注意大量的(de)(de)普通(tong)品(pin)種。因(yin)為(wei)(wei)這些普通(tong)品(pin)很少(shao)偽品(pin),能真(zhen)(zhen)實(shi)地反映各個歷史時(shi)(shi)期(qi)的(de)(de)錢(qian)幣(bi)(bi)(bi)特(te)征(zheng)。如(ru)戰(zhan)國時(shi)(shi)期(qi)刀布形制(zhi)特(te)殊,造(zao)偽者(zhe)只好用真(zhen)(zhen)品(pin)翻砂(sha)制(zhi)造(zao)贗品(pin),其(qi)破綻在(zai)(zai)(zai)于翻砂(sha)鑄造(zao)后的(de)(de)錢(qian)幣(bi)(bi)(bi)偏(pian)小,較為(wei)(wei)厚重(zhong),文字膚淺(qian),銅質粗(cu)糙,銹色不對且易脫落。而且刀幣(bi)(bi)(bi)在(zai)(zai)(zai)鑄造(zao)時(shi)(shi)其(qi)澆口(kou)在(zai)(zai)(zai)刀環上,布幣(bi)(bi)(bi)的(de)(de)澆口(kou)在(zai)(zai)(zai)首端,出落后基本(ben)不作修(xiu)整,保持自然狀態(tai),而造(zao)假(jia)者(zhe)往(wang)往(wang)為(wei)(wei)了品(pin)相美(mei)觀(guan),將刀幣(bi)(bi)(bi)、布幣(bi)(bi)(bi)邊緣磨光滑,實(shi)際上是(shi)畫蛇添足,露出了破綻。再如(ru)會(hui)昌(chang)開(kai)元,因(yin)揚(yang)州已以昌(chang)字紀年,如(ru)發(fa)現背“揚(yang)”字者(zhe),無論(lun)傳世品(pin)還(huan)是(shi)出土品(pin)均應(ying)將其(qi)視為(wei)(wei)偽品(pin)。因(yin)北宋各代和清咸豐錢(qian)幣(bi)(bi)(bi)版(ban)別(bie)最為(wei)(wei)復雜,也是(shi)造(zao)假(jia)者(zhe)競相仿制(zhi)的(de)(de)對象(xiang),我(wo)們應(ying)對它們的(de)(de)形制(zhi)多加(jia)分析,掌握特(te)征(zheng),以防上當受騙。
1.陰(yin)文字范(fan)鑄錢(qian)法,以泥(ni)(ni)陶子范(fan)為主流的子范(fan)鑄幣。泥(ni)(ni)質子范(fan),是將幣形錢(qian)文雕(diao)刻在細泥(ni)(ni)片上(shang),陰(yin)干后并(bing)燒(shao)烤成(cheng)陶后,直接澆銅液鑄錢(qian)。這種錢(qian)范(fan)很不結實(shi),只能使用(yong)一(yi)兩次(ci),用(yong)后即碎(sui),如再鑄,仍(reng)需重新再制范(fan)。
2.陽(yang)文(wen)母(mu)范鑄(zhu)(zhu)錢法,陽(yang)文(wen)母(mu)范在(zai)鑄(zhu)(zhu)幣上稱(cheng)范母(mu),范母(mu)是翻制子范用的,不(bu)能直接鑄(zhu)(zhu)錢。用這種范母(mu)可以(yi)印制很多子范,把(ba)數(shu)十個子范摞在(zai)一起,一次能鑄(zhu)(zhu)上百枚錢幣。陽(yang)文(wen)母(mu)范鑄(zhu)(zhu)出的錢幣,錢面文(wen)字筆劃棱角已(yi)經(jing)圓渾,不(bu)見特別鋒(feng)利,錢體也不(bu)是那樣平整,但絕(jue)無細(xi)小的砂粒痕跡,如有“砂眼”,必是翻砂偽造的假幣。
3.母(mu)(mu)錢(qian)(qian)(qian)(qian)翻鑄(zhu)(zhu)法,鑄(zhu)(zhu)錢(qian)(qian)(qian)(qian)的(de)要求(qiu)已很嚴格,每(mei)逢改(gai)元(yuan)鑄(zhu)(zhu)新錢(qian)(qian)(qian)(qian),先作樣(yang)錢(qian)(qian)(qian)(qian)呈(cheng)帝王(wang)審定。鑄(zhu)(zhu)錢(qian)(qian)(qian)(qian)程序(xu)最為(wei)典(dian)型:象牙精雕錢(qian)(qian)(qian)(qian)樣(yang)?銅(tong)雕祖(zu)錢(qian)(qian)(qian)(qian)?初(chu)鑄(zhu)(zhu)母(mu)(mu)錢(qian)(qian)(qian)(qian)?印范(fan)母(mu)(mu)錢(qian)(qian)(qian)(qian)?進(jin)呈(cheng)樣(yang)錢(qian)(qian)(qian)(qian)。以外(wai)省錢(qian)(qian)(qian)(qian)局的(de)程序(xu)是:初(chu)鑄(zhu)(zhu)母(mu)(mu)錢(qian)(qian)(qian)(qian)(部頒樣(yang)錢(qian)(qian)(qian)(qian))?印范(fan)母(mu)(mu)錢(qian)(qian)(qian)(qian)?進(jin)呈(cheng)樣(yang)錢(qian)(qian)(qian)(qian)。用母(mu)(mu)錢(qian)(qian)(qian)(qian)翻鑄(zhu)(zhu)的(de)大(da)量錢(qian)(qian)(qian)(qian)幣(bi),規整(zheng)精美,同版錢(qian)(qian)(qian)(qian)很多,但錢(qian)(qian)(qian)(qian)體面、背直觀(guan)無砂眼,且文字優美,錢(qian)(qian)(qian)(qian)文與地章之間深(shen)峻,無膚淺之象。
4.沉泥(ni)烘模熟鑄法(fa),。此法(fa)是將錢(qian)形和錢(qian)文鑄印在泥(ni)型上,再(zai)經過高溫處理,這(zhe)樣(yang)既(ji)可(ke)起(qi)瘠化(hua)作用(yong)(yong),又可(ke)降低配合料的(de)(de)可(ke)塑性,減少其收縮程度,稱之“沉泥(ni)”。然(ran)后采(cai)用(yong)(yong)早期冶煉熟鐵的(de)(de)方法(fa),利用(yong)(yong)小型反(fan)射爐的(de)(de)作用(yong)(yong),直接在泥(ni)型錢(qian)模上熔銅(tong)精煉,并加入(ru)鋅、鉛、錫等,再(zai)通過冷卻(que),使(shi)粗銅(tong)和粗合金的(de)(de)雜質析出,如此冷卻(que)或加熱多次,所鑄錢(qian)幣錢(qian)文纖(xian)細鋒棱(leng),表(biao)面(mian)光(guang)潔(jie),銅(tong)質精良,是砂型澆鑄的(de)(de)錢(qian)幣不可(ke)比擬的(de)(de)。
除了火法冶煉(lian)之外還有“膽(dan)水(shui)(shui)(shui)冶銅(tong)法”。這種冶銅(tong)法就(jiu)是利用金屬鐵從含有銅(tong)化合(he)物的(de)溶(rong)液中(zhong)置換出銅(tong)來,然后把(ba)它(ta)刮取下來,再經(jing)烹煉(lian)后,就(jiu)可(ke)以得到(dao)銅(tong)錠。所謂“膽(dan)水(shui)(shui)(shui)”是指天然的(de)含硫(liu)酸銅(tong)(我國俗稱它(ta)為(wei)石(shi)膽(dan)、膽(dan)礬(fan))的(de)泉水(shui)(shui)(shui)。它(ta)的(de)形成(cheng)是因(yin)為(wei)天然的(de)硫(liu)化銅(tong)礦(kuang)石(shi)經(jing)風(feng)化氧化,一部分便會(hui)生成(cheng)可(ke)溶(rong)性硫(liu)酸銅(tong),經(jing)過地下水(shui)(shui)(shui)、雨(yu)水(shui)(shui)(shui)的(de)浸泡、淋(lin)洗(xi),便會(hui)溶(rong)解而匯入泉水(shui)(shui)(shui)中(zhong)。這種膽(dan)水(shui)(shui)(shui)只要(yao)銅(tong)的(de)濃度足夠大,就(jiu)可(ke)以做為(wei)水(shui)(shui)(shui)法冶銅(tong)的(de)原料。
早在漢(han)代(dai)時,我國先民(min)就(jiu)(jiu)已經注意(yi)到(dao)金(jin)屬鐵(tie)(tie)可置換銅的(de)現(xian)象(xiang)(xiang)。例(li)如西(xi)漢(han)古籍《淮南萬(wan)畢(bi)術(shu)》上就(jiu)(jiu)有(you)“曾青(qing)(qing)(qing)(碳酸銅類的(de)礦物)得(de)鐵(tie)(tie),則〔鐵(tie)(tie)〕化為(wei)銅”的(de)記(ji)載。東漢(han)成書的(de)《神(shen)農本草經》有(you)“石(shi)膽能化鐵(tie)(tie)為(wei)銅”的(de)話。東晉煉丹家(jia)葛洪在其《抱(bao)樸子·內(nei)篇》中講得(de)更明確:“以(yi)(yi)曾青(qing)(qing)(qing)涂鐵(tie)(tie),鐵(tie)(tie)赤色如銅,……而皆外變(bian)(bian)而內(nei)不化也。”不過那時多數人對這(zhe)種現(xian)象(xiang)(xiang)沒有(you)確切(qie)的(de)了(le)解(jie),誤以(yi)(yi)為(wei)是鐵(tie)(tie)接(jie)觸到(dao)曾青(qing)(qing)(qing)、石(shi)膽就(jiu)(jiu)轉化為(wei)銅了(le)。及至唐代(dai),有(you)些從(cong)事(shi)煉金(jin)術(shu)活動的(de)方士就(jiu)(jiu)利用這(zhe)個化學變(bian)(bian)化把石(shi)膽水和(he)水銀(yin)(yin)放在大鐵(tie)(tie)鍋中加熱熬煉,被置換出的(de)銅便(bian)與(yu)水銀(yin)(yin)形成汞齊。然后(hou),他(ta)(ta)們(men)把那些很像(xiang)砂粒的(de)銅汞齊加熱,蒸出水銀(yin)(yin),便(bian)得(de)到(dao)了(le)紅銅粉。他(ta)(ta)們(men)美其名叫“紅銀(yin)(yin)”,很自以(yi)(yi)為(wei)得(de)意(yi),認為(wei)真(zhen)的(de)實(shi)現(xian)了(le)使鐵(tie)(tie)向銅的(de)嬗變(bian)(bian)。唐代(dai)后(hou)期方士金(jin)陵(ling)子所撰(zhuan)的(de)《龍虎(hu)還(huan)丹訣》就(jiu)(jiu)記(ji)載了(le)這(zhe)項“絕技”。
約在五代時(shi)(shi),“膽(dan)(dan)(dan)(dan)水(shui)(shui)冶(ye)(ye)銅(tong)(tong)(tong)(tong)”正式成為一(yi)種(zhong)實用性生(sheng)(sheng)(sheng)產(chan)銅(tong)(tong)(tong)(tong)的(de)(de)(de)方法(fa)(fa)(fa)。及(ji)至宋(song)(song)(song)代,這種(zhong)工藝發展(zhan)到(dao)很(hen)大(da)(da)的(de)(de)(de)規(gui)(gui)模。據(ju)《宋(song)(song)(song)會要(yao)·食貨(huo)(huo)篇》記(ji)(ji)載,北宋(song)(song)(song)徽宗年(nian)(nian)間以(yi)膽(dan)(dan)(dan)(dan)水(shui)(shui)冶(ye)(ye)銅(tong)(tong)(tong)(tong)的(de)(de)(de)地區有(you)(you)11處,以(yi)韶(shao)州(zhou)岑水(shui)(shui)(在廣東)、信州(zhou)鉛山(在江(jiang)西(xi))、饒(rao)州(zhou)德興(也在江(jiang)西(xi))三處規(gui)(gui)模較大(da)(da)。在崇寧二(er)年(nian)(nian)(公元1103年(nian)(nian))時(shi)(shi),全國膽(dan)(dan)(dan)(dan)銅(tong)(tong)(tong)(tong)總產(chan)量達到(dao)了(le)1874427斤,約占當(dang)時(shi)(shi)銅(tong)(tong)(tong)(tong)產(chan)量的(de)(de)(de)12%。而(er)在趙(zhao)宋(song)(song)(song)王朝偏安(an)江(jiang)南(nan)以(yi)后,所(suo)領(ling)江(jiang)南(nan)14州(zhou)的(de)(de)(de)銅(tong)(tong)(tong)(tong)產(chan)量銳(rui)減,而(er)乾道年(nian)(nian)間膽(dan)(dan)(dan)(dan)銅(tong)(tong)(tong)(tong)產(chan)量仍(reng)有(you)(you)21萬斤,竟占到(dao)南(nan)宋(song)(song)(song)當(dang)年(nian)(nian)銅(tong)(tong)(tong)(tong)總產(chan)量的(de)(de)(de)80%。所(suo)以(yi)宋(song)(song)(song)代的(de)(de)(de)人對(dui)膽(dan)(dan)(dan)(dan)銅(tong)(tong)(tong)(tong)生(sheng)(sheng)(sheng)產(chan)非(fei)常重視(shi),南(nan)宋(song)(song)(song)人張甲(jia)曾專(zhuan)門(men)寫(xie)了(le)一(yi)部書《浸(jin)銅(tong)(tong)(tong)(tong)要(yao)略》,記(ji)(ji)載了(le)當(dang)時(shi)(shi)膽(dan)(dan)(dan)(dan)銅(tong)(tong)(tong)(tong)的(de)(de)(de)生(sheng)(sheng)(sheng)產(chan)情(qing)況(kuang)。關于浸(jin)取膽(dan)(dan)(dan)(dan)銅(tong)(tong)(tong)(tong)的(de)(de)(de)具體操作(zuo),《宋(song)(song)(song)史(shi)·食貨(huo)(huo)志》有(you)(you)記(ji)(ji)載:把生(sheng)(sheng)(sheng)鐵打成薄片,排(pai)放(fang)在貯有(you)(you)膽(dan)(dan)(dan)(dan)水(shui)(shui)的(de)(de)(de)槽中,浸(jin)漬幾天,然后刮取析出的(de)(de)(de)泥狀銅(tong)(tong)(tong)(tong)(稱作(zuo)“赤煤”),入煉爐化煉。當(dang)時(shi)(shi)的(de)(de)(de)效益,大(da)(da)約每用鐵二(er)斤四兩可得銅(tong)(tong)(tong)(tong)一(yi)斤,技術水(shui)(shui)平是(shi)(shi)相(xiang)當(dang)高的(de)(de)(de)。此(ci)外(wai),那時(shi)(shi)還(huan)有(you)(you)利(li)用膽(dan)(dan)(dan)(dan)土(tu)煎銅(tong)(tong)(tong)(tong)的(de)(de)(de)“淋銅(tong)(tong)(tong)(tong)法(fa)(fa)(fa)”,基本原理與(yu)“膽(dan)(dan)(dan)(dan)水(shui)(shui)法(fa)(fa)(fa)”是(shi)(shi)相(xiang)同的(de)(de)(de),此(ci)法(fa)(fa)(fa)“工多利(li)少”,但“其(qi)土(tu)無窮(qiong),若比之(zhi)礦銅(tong)(tong)(tong)(tong),其(qi)利(li)已厚”,所(suo)以(yi)也被普遍利(li)用過。