For sale is an Omega Seamaster Railmaster featuring the blue brushed dial on the original Omega denim-style fabric strap, powered by Omega's Co-Axial Master Chronometer Caliber 8806.
A 40mm Omega Seamaster Railmaster with denim blue dial, featuring a Co-Axial Master Chronometer Calibre 8806 and certified by METAS to withstand magnetism of 15,000 gauss. The watch has a 47mm lug-to-lug length, 12.7mm thickness, and 20mm lug width.