This is a an all original vintage and classic 1953 OMEGA BRITISH MILITARY reference 6645 101000 6B/542 1687/53 housed in a very clean 37mm. (massive) stainless steel case which also retains the antimagnetic shield inside. These watches have fixed, steel lugs. The caliber 283 OMEGA movement is cleaned and accurate. The winding crown is original. The fact that this very clean dial is completely original, including the hands and luminous, makes this watch special! The large size and simplicity this watch exudes makes it a true classic. You will be hard pressed to find a better example anywhere!