Art Deco Purple Signet Sterling Silver Ring Vintage from Art Deco Era 1920s -1940s Signet Style Made by Ostby Barton Highly collectible as one of the jewelers, Ostby, perished on Titanic in 1912 Marked OB Sterling I have been an avid collector of vintage/antique jewlery. Ostby pieces are one of my favorites and this is from my personal collection Weighs 3.5g & measures 16mm tall Size 7 Has patina, not polished See pics for confirmation of measurements and condition of ring. All proceeds fund our equine/canine animal sanctuary. Feel free to make reasonable offers. Items are either ours personally or from family & friends to benefit the critters in our care. Bundle 2 items & automatically receive a 10% discount