Omega Tropical Chronograph.Omega, movement No. 10828561, case No. 2451174.Ref. CK 2451. Made on August 15th, 1949..Fine and rare, water-resistant, stainless steel and yellow gold.wristwatch with round button chronograph, 12-hour and.30-minute registers, a
C. Three-body, polished and brushed, inclined gold bezel.down-turned faceted lugs, screwed-down back..D. Color change with painted luminous Arabic numerals and.dot indexes, outer minute/seconds divisions, inset guilloche.subsidiary dials for the seconds, 12-hour and 30-minute.registers, outermost tachometer scale. Luminous gilt Lozenge.hands..M. Cal.27 CHRO 12, rhodium-plated, 17 jewels, straight-line.lever escapement, monometallic balance, shock absorber.self-compensating Breguet balance spring, index regulator..Dial, case and movement signed..Diam. 35 mm. Thickness 12 mm.