PATEK PHILIPPE. AN 18K GOLD WRISTWATCH WITH SWEEP CENTRE SECONDS AND ORIGINAL CERTIFICATE

Reference 2481 was in production for nearly a decade from 1950 to 1960, with most examples in yellow gold, a more limited production in pink gold, one example is known in platinum.
Ref.2481 is illustrated in the ‘Blue Book 5’, 2021 edition by Eric Tortella, page 206-