Steampunk earrings - these two vintage watch faces come from different makes of watches, but they are similar in size and make a good "mismatched pair"! I have attached them to a silver plated stud type earring base with a rubber nut as a more comfortable alternative to a butterfly style back. On one of them I have added a little cog from a vintage watch to the hole where the hands used to be.
They measure approximately 14mm in diameter. Although I have used industrial strength epoxy to attach the watch faces to the stud bases, I would advise you remove your earrings before showering, swimming or battling with kraken.