PATEK PHILIPPE STAINLESS STEEL REF. 3509A

Launched in 1963 and made until late 1968, the ref. 3509A was offered alongside the more well known ref. 3466. With a steel case, and distinctive screw-back 33 mm case, the watch is believed to have been made in only a few hundred examples. This example is beautifully preserved and just back from service.

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