Omega 1020, 1010, 1011, 1012 Mainspring

Genuine Generale Ressorts Swiss-made replacement mainspring for Omega 1010, 1011, 1012, 1020, 1021 and 1022 automatic movements.

Omega’s 10xx family powered an important generation of automatic watches during the 1970s and early 1980s. These movement families sold over 1.1 million units during their lifetimes, according to the Omega Museum. These movements remain common in collectible vintage Omegas and are well worth servicing today. 

When servicing a vintage Omega, mainspring quality and dimensional consistency matter. There’s no mystery about what you’re installing: GR23781X is a branded Swiss mainspring made by Generale Ressorts, a leading specialist manufacturer of watch mainsprings.

Is GR23781X compatible with the Omega 1020 and 1012?

Yes. GR23781X is a replacement automatic mainspring for the Omega 1010/1020 family, including calibers 1010, 1011, 1012, 1020, 1021 and 1022. As with any vintage movement, compare the existing mainspring and barrel configuration before installation.

Compatible Omega Movements

1010
1011
1012
1020
1021
1022

Specifications

Manufacturer: Generale Ressorts
Manufacturer Part Number: GR23781X
Type: Automatic mainspring
Height: 0.95 mm
Thickness: 0.12 mm
Length: 500 mm
Barrel Diameter: 11.75 mm

Amplitude Watch Parts ships from the USA, so there’s no need to worry about long overseas shipping delays or tariffs.