Important Modern & Vintage Timepieces

Monaco, Jul 21, 2021

LOT 27

Ref. 3646 HT, chronograph, minute counter, date, black dial, calibre Valjoux 92; “Autavia” so-called “Andretti Tachy”; stainless steel

EUR 13,700 - 22,800

USD 16,300 - 27,100 / HKD 128,000 - 212,000

Sold: EUR 15,600

Stainless steel, manual-winding, tonneau-shaped, pilot’s and diver’s wristwatch, with screwed case-back, 60-minute graduated bidirectional revolving bezel with black insert for the decompression times, black colour dial with silver colour auxiliary dials, subsidiary seconds at 9 and two horological complications:
• 1/5 second chronograph (activated by the two round-shaped push-pieces) with tachometric scale graduated on the dial for 200 units per hour
• Half-instantaneous 45-minute counter (subsidiary dial at 3 o’clock)

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Grading System
Grade: AAA


Case: 3-8


Slightly scratched

Movement: 3*


Overhaul recommended, at buyer's expense

Dial: 3-6-01


Slightly oxidized

HANDS Original

Brand Heuer, La Chaux-de-Fonds

Model “Autavia” so-called “Andretti Tachy”

Reference 3646 HT

Year circa 1968

Movement No. unnumbered (by Heuer-Leonidas S.A.)

Case No. 88 519

Bracelet black tissue strap;

Buckle stainless steel buckle

Diameter 39.1 mm. (bezel)

Caliber 13’’’ (Heuer-Leonidas S.A., based on Valjoux 92 by Reymond Frères, Les Bioux, Vallée de Joux), 18 000 v / h

Dimensions 48.1 x 37.8 mm

Signature dial, case and movement


*a 20% import VAT is due on the hammer price with buyer's premium, plus 150€ for termination of temporary export, at buyer's expense, only if it is delivered within the EU