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The half dollar, sometimes referred to as the half for short or 50-cent piece, is a United States coin worth 50 cents, or one half of a dollar.In both size and weight, it is the largest circulating coin currently minted in the United States, [1] being 1.205 inches (30.61 millimeters) in diameter and 0.085 in (2.16 mm) in thickness, and is twice the weight of the quarter.
These half dollars (aka 50 cent pieces) are denominated as either Coins or as banknotes. Although more than a dozen countries have their own unique dollar currency, not all of them use a 50 cent piece or half dollar. This article only includes half dollars and 50 cent pieces that were intended for circulation, those that add up to units of ...
Prior to the invention of the Welch plug, the core holes were sealed using pipe plugs. During the testing of a car, one of the pipe plugs backed out. In order to get back on the road, one of the Welch brothers installed a press-fit quarter or half dollar coin into the hole using a hammer. The design of the Welch plug was refined based on this ...
The half dollar was changed from 90% silver to 40%. [18] Congress passed the Coinage Act of 1965 in July. [19] The new half dollars retained their silvery appearance, due to the outer layer being 80% silver and 20% copper. The coin was also minted with an inner layer of 21% silver and 79% copper.
The California Pacific International Exposition half dollar, sometimes called the California Pacific half dollar or the San Diego half dollar, is a commemorative fifty-cent piece struck by the United States Bureau of the Mint in 1935 and 1936. Robert Ingersoll Aitken designed the coin.
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