Rolex. A rare steel water resistant wristwatch with Kew rating certificate

SIGNED ROLEX, OYSTER SPEEDKING, MODEL NO. 5056, CASE NO. 628830, 1940S

Details

Rolex. A rare steel water resistant wristwatch with Kew rating certificate
Signed Rolex, Oyster Speedking, model no. 5056, case no. 628830, 1940s
The pink gilt movement with free-sprung bimetallic balance numbered 4237 jewelled to the centre and inscribed Kew 'A' Tested, the matt silvered dial further inscribed Kew 'A' Certificate, with raised gilt Arabic numerals, subsidiary seconds and luminous hands, in circular two piece case with chamfered bezel, screw down Oyster Patent winder and screwed back, with flexible Oyster bracelet and deployant clasp, with a test report from the National Physical Laboratory, case, dial and movement signed
32 mm. diam.

Lot Essay

In the early 1940s Rolex submitted some 140 model 5056 Oysters for testing at the National Physical Laboratory, Teddington, England. These tests were even more stringent than the chronometer rating tests conducted at observatories in Switzerland. Watches with a Kew 'A' Certificate are among the rarest of all Rolex watches. This particular watch is acoompanied by a certificate first issued on the 20 July 1948 and is illustrated on page 274.

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