Important Modern and Vintage Timepieces

Geneva, Mar 27, 2011

LOT 519

Tudor Ref. 7928, Tropical Square Crown Guard Tudor, ?Oyster-Prince, Submariner, 200m/660ft, Rotor Selfwinding?, case No. 305013, Ref. 7928, case made by Rolex, Geneva. Made circa 1959. Fine and very rare, center seconds, self-winding, waterresistant, stainless steel wristwatch.

CHF 20,000 - 25,000

USD 20,000 - 25,000 / EUR 15,000 - 20,000

Sold: CHF 23,750

C. Three-body, polished and brushed, screwed-down case back and crown, graduated revolving black bezel for the decompression times, Twinlock winding-crown protected by the square crown guard. D. Tropical with luminous round, triangular and baton indexes, outer minute divisions. Luminous steel skeleton hands. M. Cal. T 390, copper colored, 17 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring, index regulator, ?Butterfly? rotor. Dial, case and movement signed. Diam. 40 mm. Thickness 14 mm.


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Grading System
Grade: AAA

Excellent
Case: 3

Good
Movement: 3*

Good

Overhaul recommended, at buyer's expense
Dial: 3-01

Good

HANDS Original

Notes

Production of this reference model started around 1958. While the 7928 Submariner was usually produced with a pointed or rounded crown guard (just like Rolex Ref. 5512), it was also made with a square crown guard configuration. These models were produced in a very small batch the year 1959 only and all seem to start with serial numbers 305xxx.