Antique French Silver Nun Medal - Virgin Mary Necklace
These slightly "puffy" medals were mostly made in the 1800s and early 1900s and were typically worn by nuns. A nun would have had her name/date engraved around the edge on the reverse side.
It measures about 1 1/8" in length including its loop (but not the attach ring).
The chain is new/sterling silver and measures about 20 inches in length.