This is an older English silver locket - no marking but I am sure the exterior is silver. There are no "gussets" inside. It's a thicker locket - 1/4 inch thick; with the bale 1 1/2 by 3/4 inch wide. Nicely engraved in the front.
Specializing in Scottish and Victorian Jewelry, China, Silver and Baby Items.
SEASONS GREETINGS and thank you for your support. **See my reduced items on RL. **Santa Monica Airport, January 7, 2018.