Omega® Case Tube for Crown, fits crown 43280, see all case numbers in description ring shanks The screw on the underside

The screw on the underside of the base allows the arms of the harp to move in and out to adjust to your watch

Imhof 942 (time)

Aurore 148

and over 400 illustrations

part number 1775

Omega® Case Tube for Crown, fits crown 43280, see all case numbers in description ring shanks The screw on the undersideOmega Case Tube for Crown, fits crown 43280, see all case numbers in description Case Tube, Friction into the case, case diameter 2. 50 mm with a flange 2. 70 mm, total height 1. 10mm, fits crown 43280. Fits Omega case numbers: 1910010, 1910012, 1910013, 1910014, 1910015, 1910016, 1910017, 1910020, 1910021, 1910032, 1910033, 1910034, 1910037, 1910045, 1910046, 1910048, 1920027, 1920029, 1950003, 1960071, 3910010, 3910011, 3910014, 3950802, 5920001,