Product Details

STUNNING 100% authentic Art Deco era (circa 1920s) solid 10k white gold stick pin by the iconic Ostby & Barton Co. of Providence, RI!Features a gorgeous octagonal genuine black onyx plaque framed by crisp milgrain borders and hand-engraved white gold detailing. Right in the center sits a glittering, genuine early-cut accent diamond in a secure bezel setting.The reverse of the setting is crisp and clearly hallmarked with the famous "OB 10K" maker's stamp. Famous among collectors, firm founder Engelhart Ostby tragically lost his life on the RMS Titanic in 1912, making jewelry from this legendary manufacturer highly sought after by historians and estate jewelry lovers alike.Fantastic antique condition! The pin shaft is straight, the gold finish is bright, and the onyx has no chips or deep scratches. Perfect for a lapel, a tie, or an incredible pendant conversion project!Material: Solid 10k White Gold (Hallmarked OB 10K)Stones: Genuine Black Onyx & Natural Accent DiamondEra: Art Deco