Coin watches are exquisite masterpieces, exceptionally rare and crafted with extraordinary intricacy. Fashioned from a two coins, they represent a captivating fusion of horological artistry, numismatic heritage, and historical significance. Typically, these coins end their journey as legal tender, only to be meticulously transformed by artisans who expertly separates the obverse and reverse, hollows out their interiors to accommodate the watch movement, and artfully reassembles them with a hinged mechanism for seamless functionality. Perhaps the most impressive and beautiful examples are made by Vacheron Constantin, a paragon of horological excellence. This example is a $20 coin minted in 1891 with an original yellow gold bracelet.