Collectible coins can encompass a wide range of types, including historical pieces, commemorative coins, and novelty items such as slugs. Slugs, sometimes referred to as "Jankovsky" after their creator, are often unofficial or private mint coins made for various purposes, including novelty or advertising. The year 1940 may reference specific collectible coins minted during that time, which can hold historical significance depending on their design, rarity, and condition. Collectors often seek out these coins to add to their collections based on factors like intrinsic value, uniqueness, and market demand within the United States of America.

Item Denomination Series Year Mint
(C.1940'S) Bronze J-140 Slug Ms Other / Varied Slugs - Jankovsky 1940 Unknown