Omega. A very rare and early stainless steel chronograph wristwatch with ref. 7077 first-generation early bracelet Signed Omega, Speedmaster, broad arrow model, ref. 2915-1, movement No. 15'996’671, manufactured in 1958 Movement: cal. 321, manual, 17 jewels, metal dust cap, signed Dial: applied Omega symbol, crystal etched with Omega symbol, signed Case: screw back with engraved “Speedmaster” to the bevel and seahorse to centre, Omega crown, small round chronograph buttons, steel bezel with 1000 base tachymeter scale graduated to 300 units per hour, 38.5 mm. diam., overall length of bracelet approx. 180 mm., signed With: stainless steel Omega ref. 7077 partially expanding bracelet stamped 6 to the end links, deployant clasp, Omega Extract from the Archives confirming production of the present watch on 24th December 1958 and its subsequent shipment to Mexico