Idan Listoln Memorial penny yana da kwanan wata kafin 1982 , an yi shi da kashi 95%. Idan kwanan wata ita ce 1983 ko kuma daga bisani , an sanya shi daga 97.5% zinc da kuma rufe tare da murfin jan karfe.
Don ladaran da aka rubuta a 1982 , lokacin da aka sanya jan karfe da zinc, mafi kyawun hanya mafi kyau don gano abin da suke da shi shi ne auna su. Nauyin jan ƙarfe na azurfa yana auna nauyin kilogram 3.11 (+/- 0.130 g.), Alhali kuwa nau'in zinc da aka zana a zane yana auna kawai 2.5 grams (+/- 0.100 g.).
A baya a farkon shekarun 1970s, farashin tarin yawa na jan ƙarfe yana motsa kudin don yin adadin din din din a kan fuskarta guda daya. Abin farin ciki, farashin jan karfe da aka ci gaba da ci gaba. Abin takaici, karuwar farashin jan ƙarfe a farkon shekarun 1980 ya tilasta Ƙasar Mint ta Amurka don canja abun da ke ciki na din din din har abada. Wannan shi ne don hana narkewa daga albashi. Ya kasance kwarewa ta baya a Amurka cewa lokacin da adadin kuɗin tsabar kudin ya wuce darajarta, mutane za su narke tsabar kudi don sayar da ƙananan ƙarfe da kuma samun riba.
A kokarin ƙoƙarin kawar da ƙarancin albashi a shekara ta 1982, Mintin ta Amurka ya ba rabin rabin albashi daga jan karfe da sauran rabin rassan zinc. Kodayake ba bisa ka'ida ba ne don narke alkalami da sayar da ƙananan ƙarfe, mutane har yanzu suna jan takalmin jan karfe daga cikin wurare dabam dabam domin su cece su saboda darasin su.
Hanya mafi kyau don gaya wa bambancin
Tabbatar yin amfani da sikelin wanda ya isa isa ya gano goma na gram (0.1 g) ko mafi kyau. Idan kuka auna nauyin zinc din a kan sikelin da zai iya rajistar cikakken digiri guda 1, adadin din din zai nuna 3 grams, tun lokacin da sikelin ya zana kimanin kilo 2.5 na zinc din zuwa 3.
Matakan da ba daidai ba zai iya yaudarar lokacin da kake ƙoƙarin warware jan ƙarfe da zinc.
Gwajin gwaje-gwaje don Gwangwani da Zinc Pennies
Idan ba ku da sikelin ƙira na goma, za ku iya amfani da gwajin "sauke". Kuna buƙatar takalmin katako mai suna Formica ko granite, sanannen din din din da aka sani, da kuma zinc penny. Sauke kowane ɗayan a kan teburin, sauraron sautin sauti. Zinc ƙaura suna da nau'i na "shinge", yayin da sassan jan karfe suna da mafi girma, ƙaramin murmushi "ring".
Da zarar ka ji daɗin irin sauti iri ɗaya, ka fara fadada nauyin 1982 sau ɗaya, sauraron sautin da suke yi, kuma ya kamata ka iya fitar da su ta hanyar abun da aka yi. A bayyane yake, wannan gwajin ba abin dogara ba ne a la'akari da su, amma ya kamata ya taimake ka ka ware mafi yawan jan karfe da kuma zinc pennies.
Tsanaki : Yi amfani da gwajin gwaji a kan ƙuƙwalwar ƙuƙwalwa a inda kake rarraba jan ƙarfe da zinc don darajar bullion kawai. Kada a bari a karɓar rubutattun Ƙididdiga ko Ƙididdigar tsabar kudi a wannan hanya don jarraba su, tun lokacin da ƙuɗuwa da sutsi a kan ƙasa mai wuya zai iya haifar da lalacewar lalacewa wanda zai iya sanya ɗakin tsabar kudi mai mahimmanci.
Cherrypicker ta Tukwici
Dubi saurin "tsauraran" mint! "Kurakurai" suka faru a cikin jerin Lincoln Memorial Cents lokacin da Mint ya yi amfani da mundin jan ƙarfe a cikin 1983. Wadannan "ba daidai ba" sunyi nauyin kilogram 3.11, maimakon 2.5 na zinc da aka zana-zane-zane.
Idan ka sami babban jan karfe 1983, zai iya zama darajar ... kyawawan yanki! Ɗauki zuwa dillalin dillalin gida mai amincewa don tabbatar da bincikenka.
Edited by: James Bucki