Новости Голосов: 1 Адрес блога: http://coindepo.ru/news/ Добавлен: 2011-11-13 00:34:24

Grading Cameo Contrast on U.S. Proof Coins

2013-04-27 12:00:01 (читать в оригинале)

In 1971 the United States Mint developed a new process for producing coin dies that would give virtually every proof coin minted a cameo contrast finish on the devices. Previously, the frosty finish on proof coins was the exception and not the rule. Approximately the first one hundred coins minted from a new set of proof dies had frosted devices. If you collect proof coins made before 1970, you know that the deeper the cameo contrast the Read Full PostGrading Cameo Contrast on U.S. Proof Coins originally appeared on About.com Coins on Saturday, April 27th, 2013 at 08:00:01.Permalink | Comment | Email this