Metal Composition: 56% Copper - 35% Silver - 9% Manganese
Diameter: 21.2 mm
Mass / Weight: 5 grams
What this coin looks like (obverse, reverse, mint mark location, special features, etc.): This is a doubled die Jefferson Wartime Nickel variety where the 3 is stamped over the 2. It is actually the entire date 1943 stamped over 1942 and the entire date is slightly doubled. In the left-side of the image depicted above: The 3/2 variety will have a distinctive sharp hook on the bottom end of the three which looks similar to a barb on a hook. Sometimes the 4 will appear doubled and wider as well. The right-side image depicts a normal 1943 date for comparison.
Coin value chart: Typical coin prices, values and worth in USD based on grade/condition