Lot No. 118 (92nd Auction)
Rolex "Oyster Perpetual 50m=165ft" DAY-DATE Superlative Chronometer BY OFFICIAL TEST", Movement No. DD607800, Case No. 134635, Ref. 6511 with "Brevet Plus" - label, Cal. 1055, 36 mm, circa 1968

A gentlemanā€˜s important and extremely rare rose gold self-winding wristwatch with calendar - a prototype of the DAY-DATE with red DAY-DATE logo. It is an exceptionally rare timepiece; to the best of our knowledge this is one of only two copies in the world
Case: 18k rose gold, screw back reference 6510, reeded rose gold bezel, screwed "Oyster Plus" winding crown. Dial: silvered, applied rose gold and luminous indexes, centre seconds, signed, window for date and day of the week in Italian, luminous leaf hands. Movm.: rotorwind movement, rhodium-plated, ground, 8 adj., 25 jewels, Glucydur screw balance with regulation screws, shock protection for balance.

The watch is one of the very first DAY-DATE models with reference 6511, in the same year when the patent was applied for, so that this is one of the very first Day-Dates ever; the second generation watches with ref. 6511 are already different. It is more or less the prototype of the Day-Date, which is also apparent from the writing on the dial. It is said that the watch is authentic only if it has the Italian day of the week disc.
Estimate  40,000 - 60,000 €

Price Realised  89,300 €
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