Super-valuable US currency Collectors of American notes and coins pay eye-watering sums of money for the most desirable examples. From pennies and dollar bills you may just find lurking in your wallet or purse, to historically important rarities that fetch millions, we reveal the US currency specimens that are worth considerably more than their face … Read more
An unusual case of machine doubling What is called “machine doubling” is a fairly common occurrence on coins and is a manifestation of press instability, writes Mike Diamond in his “Collectors’ Clearinghouse” column. The featured coin this week displays an unusual form of machine doubling. “A complex example of bifacial push doubling is seen here … Read more
It has become normal to see small-size high-denomination notes dominate the top price tier in contemporary auctions. These notes are nearly always from the Series 1934 issue. Seeing one from the earlier Series 1928 does not often happen, so the appearance of one such $5,000 note at the Stack’s Bowers Galleries currency auction at the … Read more
31 U.S. Code § 5112 – Denominations, specifications, and design of coins (a) The Secretary of the Treasury may mint and issue only the following coins: (1) a dollar coin that is 1.043 inches in diameter. (2) a half dollar coin that is 1.205 inches in diameter and weighs 11.34 grams. (3) a quarter dollar … Read more
The half dollar, quarter dollar, and dime coins are clad coins with 3 layers of metal. The 2 identical outer layers are an alloy of 75 percent copper and 25 percent nickel. The inner layer is copper. The outer layers are metallurgically bonded to the inner layer and weigh at least 30 percent of the … Read more
How to look for to spot the really rare ones!