ID help! I think it's a ref 1603.
This is the Rolex that my dad gifted my granddad some 40 (?) years ago... I always think this is reference 1603, but I’m not so sure anymore... It’s been serviced and stupidly I forgot to confirm with the local RSC. Obviously the box & papers didn’t survi...
Thank you again!
Now I'm gonna be doing a lot of reading on this reference tonight. Hahahahaha!
I think it didn’t come about until later.
I’m sure there are more suitable members here to answer this question...