The 30mm calibre was one of Omega's most famed calibres. Introduced in the 1930s with the 30t1 and 30t2. The Calibre 265 is directly detrived from the 30t2 and has minor differences with it. These watches were well known for there accuracy and won numerous observatory competitions. This particular watch has a Cal. 265 with Serial number 12176565 and this makes it an early 1950's watch. It is in excellent state and running fine.

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Omega calibers list by category