That will be tough to find since it is a black dial. Must it be black? That colour was seldom seen on 50s and 60s Omegas (other than the trilogy of professional watches launched in 1957, the Seamaster 300, Speedmaster and Railmaster). You will struggle to find a straight, original black dial and you will pay more for one even if you do. Better maybe to find a nice silver or cream dial 2846 or maybe a 2577 fat lug as it is much easier to find a good one of those for a few hundred. If you must have a black dial, prepare for a long search, punctuated by disappointment. The one you show above is suspect by the way, quite likely a redial but its hard to tell from that.