Crispin Jewellery has dated this piece to the Victorian era.
Not Hallmarked but tests as
MEASUREMENTS
A beautiful locket that opens via unfolding to reveal a compartment between which a picture can be placed.

Glass is in good condition but one piece does have a few nibbles and is mis-shapen
Locket diameter inc bale; 25 x 11mm
Weight; 4.2g
CONDITION
Superb condition for age, minimal signs commensurate of age. Cleaned.
Crispin Jewellery has dated this piece to the Victorian era.
You can view the stock and full dealer information on the Crispin Jewellery Profile Page