Collectible coins, such as the 1972 Denver nickel, are often sought after by numismatists due to their historical significance, minting details, and condition. The 5-cent nickel features designs like the portrait of Thomas Jefferson and the depiction of Monticello on the reverse side. For the 1972 issue specifically, collectors pay attention to factors such as its mint mark from Denver (D), coin grading, and variations that may affect its value. Rolls of 1972 nickels may contain numerous coins that are in circulation or uncirculated condition, offering different investment opportunities based on scarcity and demand in the collectible coin market.