Omega Seamaster 300 Professional GMT 'Great White'

The Seamaster 300 was Omega's response to the Rolex Submariner upon its introduction in 1957. Featuring a robust steel case with a 300-meter depth rating, a rotating bezel graduated with dive-timing scales, and a metal bracelet with diver's expansion links, the early Seamaster 300 was not only functional a diver that would go on to see use in Her Majesty's Navy, but is arguably some of the handsomest sports watch designs of the past century. As it evolved, the Omega Seamaster 300 went on to see numerous evolutionary changes, with nearly innumerable variants in a variety of materials and colorways produced in the past 60 years. This fact alone has made the Seamaster Professional line (as it came to be known) so desirable to a large portion of the collector community — simply because they don't all look exactly the same. This example, a Reference 2538.20.00, is a GMT-equipped take on the original design dating back to circa 2004. It features the same 41mm twisted-lug case design with a s