This pin is so precious! It is in wonderful vintage condition. Signed Krementz piece. Pin mechanism works well. I purchased this over 20 years ago at an estate sale and it has been lovingly stored until now. To be honest, I do not know what the metal is but it looks like gold. However, I am unsure. I am not a jewelry expert and probably those interested would already know. I am selling this as a signed vintage costume jewelry piece.