Anyone has an idea of the case maker on this 145.022-78? I searched through the known places but didn't find this sign. C or CO?

 

Can you show the whole caseback? And maybe the watch?

Looks a bit, unfinished..

 

I will get more photos in the next days.

It might look on the photo, but it is regular long S and R dial, everything checks out on the watch.

 

https://omegaforums.net/threads/vintage-omega-speedmaster-861-1978-deep-patina-unpolished.33817/


(Photo pulled from listing above)

Came across this as second one with the mark.

Edit: unless this is the one the OP has purchased.

 

Great find. That is not mine but it looks 100% like that, crown, case back etc. The logo inside is the same. So which company is it?