Collectible coins, often referred to as numismatic items, are coins valued not only for their face value but also for their rarity, historical significance, condition, and demand among collectors. The term "So-Called Dollars" is used to describe medals and tokens issued in the United States, particularly during the 19th and 20th centuries, that resemble dollar coins but were not intended for circulation as legal tender. One notable example is the "1778" So-Called Dollar, which commemorates significant events or figures in American history, often appealing to collectors with an interest in U.S. heritage. The denomination of "1 One Dollar" can refer to both legal tender coins and commemorative issues that celebrate milestones in American culture and society.