Amazing important vintage art deco Penguin Marcasite silver bakelite ring. The structure is made of bone, the green part is made of bakelite. The ring is approximately 3.5 cm long and approximately 1.5 cm wide. Its size is approximately 54 FR. Good condition, vintage, wear and tear. Condition: Used: Item that has been worn. ... Used: Item that has been worn. any imperfections. Dominant stone: Marcasite Brand: Antique Type: Signet ring Dominant color: White Size: 54 Metal: Sterling silver