We have a very nice average circulated 1936 Walking Liberty Half Dollar in a keychain that has been made in Italy, it is not Sterling Silver but very well made, very sturdy, will be able to hold your keys very well, and not come apart.
Overall it measures 4 inches long and a Inch wide
The clasp is marked only with BREV., which stands for "Brevetto." This is the Italian term for license, and the stamp signifies that the particular design or piece has been licensed or patented. So my necklace is a designer piece from Italy.