Reeding ntawm ntug yog qhia kom tiv thaiv npib clipping thiab cuavCov tswv yim tseem ceeb ntawm npib edging yog ntug mills ntawm ntau hom, uas muab cov qauv ntawm ntug ntug tom qab npib thiab npib mills nrog ntug nplhaib, uas ua rau lub ntug ntawm lub sij hawm thaum lub npib yog milled.
Dab tsi npib tau reeded ntug?
Cov rims stylish koj yuav tau pom ntawm U. S. dimes, quarters, ib nrab duas las thiab ib co duas npibyog hu ua reeded edges. Lawv tau nyob hauv Asmeskas txiaj yuav luag txij li hnub ib los ua ib txoj hauv kev ua kom tib neeg ncaj ncees. Tebchaws Asmeskas Mint tau tsim nws thawj qhov chaw mining hauv Philadelphia xyoo 1792.
Thaum twg npib pib muaj ridges?
Reeded npoo tau tshwm sim thawj zaug hauv Teb Chaws Asmeskas npib hauv lub 1790sntawm ib nrab dimes, dimes thiab quarters ntaus hauv tsawg kawg yog 89% nyiaj, thiab ntawm $ 2.50 kub lub quarter eagles, $ 5 kub ib nrab eagles thiab $10 kub eagles minted nyob rau hauv tsawg kawg yog 89% kub.
Dab tsi yog ib qho ntug ntawm ib npib?
Hauv kev xyaum niaj hnub hauv Tebchaws Meskas, milling, lossis milled ntug, tuaj yeem xa mus rau nce toj ntawm lub ntsej muag npib, thov los ntawm lub tshuab milling tshwj xeeb tom qab cov phiaj xwm tau txiav tawm thiab polished.
reeded edge txhais li cas?
Lub ntug ntawm lub npib yog cov kab ntawm cov kab grooved uas nyob ib puag ncig ntawm ib puag ncig ntawm qee cov nyiaj hauv Teb Chaws Asmeskas, xws li dime, quarter thiab ib nrab duas. Yog koj tshuaj xyuas lwm cov nyiaj npib, koj yuav pom tias qee qhov ntawm lawv tsis muaj reeding ntawm ntug npib.
