This tiny little piece of Deco - is just over an inch long with 5/8 inch tongue with a spring. Back is marked sterling and the Pat. number puts it squarely in the mid-thirties. All marcasites there, lovely old patina and ready to snap on to your collar or neckline. Excellent vintage condition. I have now replaced the marcasite missing in the first picture.
Tiny Art Deco, Sterling and Marcasite Clip Pin