Railmaster broad arrow, 1958's first series, Ref. 2914/3, best known for its anti-magnetic features. The watch known to resist 1000 Gauss or 0.1 Tesla, due to its short production 1957-1963 and limited pieces produced, it is one of the most collectible Omega pieces. Omega Caliber 284 manual winding, Omega Seahorse screw caseaback 38mm. is in excellent condition and very clear, original soft metal movement cover for anti magnetic protection, s/s bracelet, outstanding original overall condition for this important and iconic watch.