Collectible coins encompass various types, including government-issued currency, tokens, and medals. In the United States, collectible items like the "1 One Dollar" coin, often produced for commemorative or specific circulation purposes, fall under this category. Miscellaneous medallic tokens and fantasy coinage, such as those produced in 1987, serve aesthetic or thematic purposes rather than functional currency. These items are often sought after by collectors for their historical significance, artistic design, and rarity.