I accidentally ordered a duplicate color the other day. This strap is BNIB, never worn, only taken out of the box for pictures. Comes with the little credit-card-like-thing-of-authenticity. These are $100 plus FedEx from Austria if you buy it from ISOFrane. Buy this one for $90 USD shipped in the US and save yourself $20 versus buying new. No returns please. Size is 20 mm. Thanks for looking. Myron