Unusual and very rare stainless steel Omega chronograph ref. 2451 water resistant case, screw back with rounded pushers for chronograph and monoblocco case, diam 35 mm, n°1741667. Hand winding movement Lemania 27CHRO n°1082xxxx. Original silvered two tone dial with applied indexes, three counters and outer tachimeter scale. Stainless steel baton hands.
Period: Genève 1950's
Case back engraved with "Aeronautica Militare Argentina" logo