Only seven Denver-minted steel pennies are known to exist, according to USA Coin Book, and a coin in average condition is estimated to be worth over $34,800. Auction record: $115,000 1969-S Lincoln ...
A small portion of the 1969-S penny mintage from San Francisco showed the doubled die error, pushing up its value. A Washington Quarter from 1947 in circulated condition is worth between $4.65 and ...