Parthian Watch Company
Patek Ref 2509, Rare Rose Gold 1956
Patek Ref 2509, Rare Rose Gold 1956
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This is a fine and rare 18K gold reference 2509 watch, manufactured by Patek Philippe, Genève circa 1956.
Ref. 2509 and its twin sibling – Ref. 2508 – are considered the apex of Patek’s mid-century case design. Ref 2508 was the manufacture’s first waterproof screw-back case for a time-only watch, and Ref 2509 followed with the same distinct ten-sided design back cover that screws in water-tight. Whereas the majority of Ref 2508s used an indirect center-second movement, Ref 2509 used caliber 12-400 movement with subsidiary dial to count the seconds. This gives Ref 2509 an old fashioned look.
Cailber 12-400 is fitted with a straight-line lever escapement, a monometallic balance adjusted for heat, cold, isochronism and five positions, a self-compensating Breguet balance-spring, and a micrometer regulator. It is decorated with the Geneva seal.
The circular water-resistant screw-in case back, dust cap, 18K gold buckle, case, dial and movement are all signed. The case appears unpolished with razor sharp edges and a deep hallmark under the crown. 35.5mm diam.
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![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/b95949ef-7aae-406d-aac4-0c85a813698f.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/aa12b06a-c9dd-4ab5-abc2-5c6ee93a7725.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/cb86fb80-dc8d-48aa-9c59-4bbf2b806a05.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/f8abc0cf-d905-4437-bf9b-da16ef6adcd6_1.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/9bd1240f-2648-44f9-ba69-8ffaa471ed01.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/3cbf209c-eae7-4f28-b061-8c58ee24b0e6.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/b49a8dcf-d953-4a9f-b047-2d6898001057.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/cadec2d4-39d3-404f-8b3c-254b80c4cc75.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/f58edbd3-36dc-4e09-b1cf-1f360fb12d06_1.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/07b69e21-8292-4a15-94d1-2b83578fdfcd.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/9a792cfd-cd4c-4356-963e-e67e95b99d99.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/208e9b20-5b69-4a33-a17e-5b7f24c85175.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/1553c43d-e2e8-428b-97ed-a439ab523959.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/6433ffa5-9e30-42e4-8ac9-b13b74004c63_1.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/6433ffa5-9e30-42e4-8ac9-b13b74004c63.jpg?v=1716825077&width=1445)
![Patek Ref 2509, Rare Rose Gold 1956](http://parthianwatch.com/cdn/shop/files/a7c1c142-6abd-4bca-b2ec-cd24598fca11.jpg?v=1716825077&width=1445)