The Patek Philippe Ref. 3587 is the very first model to house a Beta 21 movement and was launched in 1969. Measuring to be the largest diameter and serially-produced wristwatch ever made by the firm, the model weighs a hefty 170grams of 18K yellow gold and was offered at $3500 at the time —higher than the perpetual calendar 2499 at $2500.

Ref Variations: 3587-2,3587-1,