The Omega 26.5T3 is an open face calibre watch movement featuring a pillar design. The calibre was assigned to Orator, possibly due to the distinctive shapes of the balance cock and regulator. It is worth mentioning that there is also speculation that this calibre may originate from Dodane Freres. The movement has a stem wind and set feature, along with a sub-second function. It was commonly used during the approximately 1940 period.