Rolex vintage lady, could you help me?

[Alcibiade]

Hi guys,

I kindly request your help to identify this Rolex that belonged to my grandmother.

Maybe it’s a Chameleon from 1960/1970, or something like that, but I don’t know.

It’s working but it hadn't been serviced for many years.

I have some doubts about the genuinity of the bracelet; on the clasp there is the hallmark “750 2 CB”; “750” is the hallmark of the gold, but I don’t know anithing about “2 CB” (maybe is the manufacturer?).

Sorry for my english and thank you in advance.

[Alcibiade]

Waiting for someone to help me, I've continued researching the internet.

I've found that maybe the model of the watch is only "Precision", but I'm only guessing.

Besides, I've found another similar Rolex with the hallmark "750 CB" on the clasp, that is similar to "750 2 CB" on my Rolex; the link is https://www.rubylane.com/item/110591...e-Ladies-Watch (I hope not to break any forum rules by posting this link).

Again, I'm sorry for my english.

[crowncollection]

Ladies cocktail watch


Sent from my iPhone using Tapatalk

[77T]

Pictures of the inside of the case back could help us better...but I'd guess it's from the 1940s or 1950s. Also a picture of the backside of the movement.
Many were made for custom jewelers to add special bracelets and yours is great - it's not a usual run-of-the-mill watch combination.