Collectible coins, specifically the 50 Statehood Quarters, are a series of commemorative quarters issued by the United States Mint. The program began in 1999 and featured one quarter for each of the 50 states, minted in the order that the states entered the Union. Each quarter showcases a unique design representing significant symbols or events associated with the respective state. Coins minted in Denver, indicated by a "D" mintmark, are part of this series and are sought after by collectors for their historical and aesthetic value. The 25-cent denomination is emblematic of this series, making them a popular choice among numismatists.

Item Denomination Series Year Mint
1999-D 25c Connecticut 25c 50 Statehood Quarters 1999 Denver