OMEGA, Cosmic Beautiful men's wristwatch-calendar. Round case in yellow gold (750). Signed cream dial with applied gold Arabic numerals and arrows for the hours, moon phases and second hand at 6 o'clock, day of the month with Arabic numerals in blue around the dial and blue hand, and two windows for the day of the week and month. Hand-wound mechanical movement, signed and numbered 11206140. Clipped caseback, signed and numbered 11212905 inside. Brown leather strap and original yellow gold (750) buckle, signed. Circa 1955. Gross weight: 46.6 g. - Case diameter: 35 mm. - Length: 21 cm. With case and small leaflet with instructions for use. Good overall condition, bracelet worn, damaged at the loop, cracked plexiglass, minor dial pitting and very minor wear scratches.