Retro Modern Watch ring case. No watch. The crystal was long ago replaced with a dyed and carved starburst of mother of pearl. The inside is empty and open, ready for a lock of hair, a photo (would make a great locket )or any small keepsake. The face of ther ring is 3/4 inches. Inner case marked made in Germany. Kollmar & Jourdan. The outside is marked Base Metal. Ca., 1950 and is a charming piece that wears beautifully!