Watch: rare Omega Seamaster Chronometer Jumbo Ref. 2493/8 of 1950

Rare Omega Seamaster Chronometer Jumbo Ref. 2493/8 from 1950, 36.5mm diameter, steel, screwed back with reference number, automatic movement in chronometer quality, Cal. 333, wonderfully preserved highly radioactive dial with gold-tone indices, luminous hands, functional, 12-million movement number indicates 1950 manufacture, authentic original condition, rare reference.