Large 14K Engine Turn Calendar Disc Pendant with Diamond

Crafted in 14K yellow gold, the pendant features the engine turn lines with a calendar in the center. The calendar is for the month of November, 1954.
A single diamond is set in the 26th day. Hand engraved GSH initials on the back.
Measurements: 48 mm H (including bail) x 38.5 mm W
Weight: 10 grams
Marked: F14KF (FF for maker's mark)