NEED HELP IDENTIFYING IWC WATCH

Your text is quite limited, I must say....

But this is reference 6503, depicted in the 1972 catalogue.

Your watch is nearly 50 years old and is one of the earliest DaVinci line
models.

They were made in white gold, yellow gold or guilded silver.

The bracelet is hand made.

Regards,

Adrian,

(alwaysiwc)