Vintage shops Birks locket

Vintage Birks locket, gorgeous engraving front and back. "To Brenda from Bob 25.12.45" engraved on the back. Minor wear as seen in picture. Original protectors inside for picture. Comes on the original chain also sterling silver. 16.4" total length, chain is 14", the locket is 12.2 grams shops, 16.4 grams total weight.