As the previous post was focused on a specific chain for women, I am now including one for men! These watch chains are available as of this posting on my Etsy shop. For men, the watch is put into your "fob" or pocket with the seal, key, and any charms hanging outside.
The inspiration portraits are Captain John Clayton Cowell, 1st Battalion, 1st Regiment of Food, circa 1795-96 and Elijah Boardman by Ralph Earl, 1786.