New Old Stock BMW Silver Chrome Finger Ring. Never Used. Size #9 which according the chart that I have is 2.34" Circumference (59.38mm), or .74" Diameter (18.9mm). These can run a 1/2 size up or down. Very Unique Collectible that is handmade using a vintage discontinued licensed BMW Hat Pin. High Quality Class. Custom made. USPS First Class Shipping to your USA Address will be $5.85. Thanks for looking at our ebay shop and remember "Old School Class Never Goes Out of Style!."