Omega geneve cal 1022 , 1660117 on the caseback. The serial number indicates manufacturer is approximately 1973
There are no service records for this watch but the previous owner assures me it has been looked after and this is backed up by the  photo with the time grapher, dated 30/04/2023 The crystal has been replaced.
Although it's a common watch from the seventies it's a considerable advantage  to purchase one running so well. 
The day date clicks over about 2 minutes to midnight.

The Omega Calibre 1022 is a mechanical automatic movement used in several Omega watches. It features a power reserve of approximately 44 hours and a frequency of 28,800 beats per hour, or 4Hz.

The movement has 23 jewels and includes a quick-set date function. It also features a stop-seconds mechanism that allows for precise time setting.

The Calibre 1022 has been used in a range of Omega watch collections, including the Seamaster, Speedmaster, and Constellation lines. It is known for its accuracy, reliability, and durability.

Omega is a Swiss luxury watchmaker that has been producing high-quality timepieces since 1848. The company has a reputation for innovation and precision, and its watches have been used by astronauts, explorers, and athletes.

Import duties and taxes to be paid by the purchaser.