If letting the watch lovers to tell one suspended movement that they want to own again, you will absolutely hear of the name of Calibre 321 of Omega. The reliable movement has been favored by many watch lovers since 1940s and it still has been favored by many watch collectors till now. The symbolic movement will be back gloriously.
![The legendary Cal.321 has been well-known by its exquisiteness and complicated performance.](https://www.omegatop.me/wp-content/uploads/2019/01/Original-Calibre-321-Of-Knockoff-Omega.jpg)
The original calibre 321 was well-known with its exquisiteness and complication, which made it occupy an important status in the history of watchmaking. Many accurate fake Omega watches have been equipped with this movement including the Speedmaster ST 105.003, which was the first model of Omega that had been successfully passed the tests of NASA.
![The antique Omega Speedmaster has been equipped with the accurate Cal.321.](https://www.omegatop.me/wp-content/uploads/2019/01/Steel-Case-Omega-Speedmaster-Imitation-Watch.jpg)
The famous Omega Speedmaster copy watch with black dial that Edward Higgins White wore to enter the space had also been driven by this movement. Besides the sophisticated mechanical structure, the original movement also held up the important historical significance.