Metal Composition: 92% Gold - 8% Silver and Copper
Diameter: 25 mm
Mass / Weight: 8.75 grams
What This Coin Looks Like (Obverse, Reverse, Mint Mark Location, Special Features, etc.): The 1802/1 $5 Gold Turban Head Half Eagle features a "2 Over 1" overdate. All coins have a 1802 struck over an 1801 as it was cheaper in those days to re-use usable dies by striking over them with the new date - especially considering that no half eagles were struck in 1801 and the die was unused that year. Depicted below is an example closeup image of the underlying parts of the "1" seen within and around the "2" (Source of example images is courtesy of Heritage Auction Galleries):
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