Omega. A large stainless steel wristwatch with sweep centre seconds, subsidiary seconds and later case

According to the Archives of Montres Omega, the movement and the case of the present watch were not born together and have therefore been assembled to a later date. The movement was furthermore modified to feature both sweep centre and subsidiary seconds functions, hence resembling Omega's famous "Synchrobeat" model (for a description and illustration of the stainless steel prototype see Omega - A Journey Through Time by Marco Richon, p. 193, pl. 85).