Vtg pearl celluloid copper mint green circle pin.

I believe that this is a vintage pin made is west Germany, I have had several varieties of this combination. The pin has a filagree center set with pearls, it is on top of a mint green pearlized circle that is bezel set. The edge is a wire trim in loops. I think the metal is a colored aluminum. Stunning and unique, trombone clasp which would date this to the turn of the century to the 1940’s mostly used in Europe. 1.5” in diameter.