US Coins
The 1982-D Penny That Shouldn’t Exist: One Sold for $18,800
Almost 10 years to the day a Collector searching a $50 Bank Bag made a Remarkable Discovery
Only two examples of the rare 1982-D Small...
The 1945-S Micro S Mercury Dime: A Forgotten Philippine Mintmark and a $25,875 Rarity
The Tiny Mintmark That Turned a 1945 Mercury Dime Into a $25,875 Coin
An obsolete mintmark punch returned to service in 1945. Decades later, collectors...
1870-CC Double Eagle: The Cash Problem Behind a $1.62 Million Coin
Discover why the 1870-CC double eagle became a major rarity
This feature expands on CoinWeek's 1870-CC Liberty Head Double Eagle collector’s guide. The original...






















