Can anyone please let me know for sure if this is a genuine Omega movement? and if so, what Cal it is please? Thank you

 

try 26.5

 

Read the number under the balance. Probably 26.5 SOB T2

 

Thank you all so much for the info. So it is a genuine Omega Movement? basically I have this watch, I know that the face and hands have been changed in the past, but I have had people saying that it is not a genuine movement and the case is not genuine. I know it is, as in the case back it has 'Omega, Swiss Made Fabrication Suisse
Acier Inrouillable, 887952, and on the edge of inside the case has the number 952. I am just trying to work it all out, it has been a nightmare trying to find things out

 

Yes I know, the face and hands are a little 'Marmite', personally I don't mind them. I did try to find a genuine face and hands true to the model but had no luck and only shallow pockets. Your advice and help is brilliant and I really do appreciate it. Thank you