Omega. A fine stainless steel tachymeter chronograph and bracelet
Speedmaster Professional, Ref: 145022-69ST, Movement no. 29604281, circa 1970
17-jewel Cal. 861 manual winding movement, shock resistant suspension to monometallic balance, black stepped dial with fifth second ring enclosing luminous baton numerals, subsidiary dials for 30-minute and 12-hour registers and continuous seconds, white hour and minute hands with luminous fill, square end spear sweep hand, screw back tonneau case with "dot over 90" tachymeter scale bezel, case, dial and movement signed, Omega 1039 bracelet stamped 2/70
40mm