So-Called Dollars are a category of numismatic items that typically consist of medallions or tokens issued to commemorate significant events or individuals, often resembling the size and form of a dollar coin. The term originated from a series of pieces produced in the United States, particularly around the 1890s through the early 20th century. The 1915 issue of So-Called Dollars is linked to the Panama-Pacific International Exposition, celebrating the opening of the Panama Canal. These pieces, like many collectible coins, are highly sought after by collectors for their historical significance, unique designs, and connection to American cultural events.