A brooch is a decorative item fastened to a piece of clothing using a hinged pin and catch.
Brooches were popular throughout many jewelry periods, such as the Georgian, Victorian, Art Nouveau, Edwardian, Art Deco & Retro eras.
Prior to 1910, brooches were fastened by a pin that extends far beyond the handmade C-catch, with a tube hinge.
Brooches from 1910 to the 1930s were fastened by a pin that extends beyond the handmade safety catch, with a tube hinge.
Brooches post-1930s were fastened by a pin that terminates at the modern safety catch, with round hinge.