Exact age unknown, but looks 1920’s / 30’s. Stamped 9ct to rear, weighs 7.2 grams, 31mm high x 24mm wide, in very nice condition. Pin opens and closes well...
Stamped 9ct, also has a makers mark which I can’t make out. Weighs 4.4 grams & is 52mm wide. Very nice condition. At a rough guess it probably dates to the early half of the 1900’s