Omega Cal 420 Old stock but new Dial in brand new and unused by no means equipped condition. The spherical white textured Dial with raised gold color Arabic numeral hour markers 2,4,6,8 and 10 with corresponding luminous markers and the Omega call in black and Omega insignia in raised gold. It is a uncommon merchandise, just about unavailable, even from Omega. Signed Omega Swiss. Measures 28.6 mm diameter roughly. Dial ft at 26 minutes and 54 minutes. First produced 1952 to 1958.