Is the case movement of Omega constellation genuine?

Omega constellation series watches were launched in 1952. After many technological innovations, it has become a classic series of Omega. Constellation series used to have various styles, such as square watches and integrated watches. 1964 introduced the watch design of "C-shaped case" (that is, the case looks like two interlocking "C"), which was later used in the first constellation women's watch born in 1967.