Rolex Cellini.. Real or Fake?

[LisaLoo]

Hi there!

I have inherited my nannas…. Possible…Rolex. The back story is it apparently came from my grandads work (a very large construction company) I would say at least 50 + years ago. He gave it to my nanna as he didn’t wear watches.

My nanna did say she had a cheap band put on it.
Unfortunately that’s all I really know about it.

Any information would be greatly appreciated since I have absolutely zero idea about watches! Haha

Thanks in advance ☺️