Your question needs to be rephrased. "Denver coins" are simply ordinary US Coins (cents, nickels, dollars, etc.) that were struck at the US Mint facility in Denver.
Denver is one of the three places where coins are made.
No, the Denver mint made these coins on purpose.
The Denver Mint made less coins.
Current circulating U.S. coins are minted in Philadelphia and Denver, with collector proof coins minted in San Francisco.
Denver
Denver
U.S. coins are all produced by the U.S. Mint, which currently has facilities in Philadelphia, Denver, and San Francisco, and West Point. Circulation cents are only made at Philadelphia and Denver. Proof coins are made at San Francisco, and special bullion and other collector coins are made at West Point.
It was either made before the second mint (denver) was established , or it is a fake.
Circulating US coins are made in Philadelphia and Denver. Proof coins are made in San Francisco and bullion coins are struck at West Point. Other mints, now closed, were located in New Orleans, Carson City, Charlotte, and Dahlonega GA.
Coins are produced by the US Mint which is part of the Treasury Department. The Mint currently strikes coins in 4 facilities: Philadelphia, "P" mint mark since 1979/80 on all coins made there except cents Denver, "D" mint mark on all coins made there San Francisco, "S" West Point, "W" Since the 1970s only Denver and Philadelphia have produced coins for circulation, while proof coins are made in San Francisco and special collectors' coins, bullion coins, and commemoratives are made at West Point.
Coins dated 1970 were minted at three mints. Coins bearing no mintmark were minted in Philadelphia. Those with an "S" Mintmark were made in San Fransisco. Those with a "D" mintmark were made in Denver.
Actually there are 4 mints. Circulation coins are made in Denver (D mint mark) or Philadelphia (P or no mint mark, depending on the coin's date and denomination) Proof coins are made in San Francisco - S Commemoratives are made in West Point - W