Up for sale is a 20mm Horus rubber strap for the Omega Seamaster. I had this mounted to a 2255.80 so I know it will fit that and the 2254.50. It will probably fit a variety of other models as the case shapes are very similar. It comes with the original Horus brushed buckle and spring bars (not pictured). I am asking $75 OBO including shipping and fees via Paypal to the continental US. I have references as a buyer and seller on this forum and others. PM me or email me at jared808 at aol dot com with any questions. Thanks!