A cikin tsarin kuɗi da aka sani da matsayin zinariya, an ba da wani nauyin zinariya da aka ba da sunan kuɗin kuɗi. A cikin dogon lokaci, gwamnatin Amurka ta saita darajar dalar Amurka ta yadda ɗayan troy ya kasance daidai da $ 20.67 ($ 0.665 a kowace gram), amma a cikin 1934 an rage darajar dala zuwa $ 35.00 a kowace troy ounce ($ 0.889/g). A shekara ta 1961, yana da wuya a ci gaba da wannan farashin, kuma rukuni na bankunan Amurka da Turai sun amince da yin amfani da kasuwa don hana ƙarin raguwa da zinariya. A ranar 17 ga Maris, 1968, yanayin tattalin arziki ya haifar da rushewar zinariya, kuma an kafa tsarin biyan kuɗi guda biyu wanda ake amfani da shi har yanzu ana amfani da shi a matsayin kuɗin zinariya.
ajiyar zinariya