Gents,
Here is an interesting case. I have encounteres a vintage PP. Blue square dial, solid yellow gold bracelet. It has "Patek Philippe & Co" on its dial. And as far as I know such marks have been done only until 1950s. I am very curious to identify the model of the watch and approximate value.
Is anyone familiar with this model? It looks like ref.3599/1, but has "... & Co" marking on the dial which is very confusing.
Appreicate if anyone can help.
Regards, Sergio
