1940s Mercury Dime Quite a few rare, valuable coins from the 1940s are still around today. The 1940s mercury dime was part of the 1916 to 1945 series. Roughly 21.5 million were minted.

“Rare gold coins like the 1927-D $20 gold Saint-Gaudens could have been bought in the ’70s for $60,000 and now are worth well over $3,000,000.” ...