Heuer. A stainless steel automatic calendar chronograph wristwatch
Model: Autavia 'Jo Siffert'
Reference: 1163
Date: Circa 1970
Movement: 17-jewel Cal.11 automatic
Dial: Silvered, applied luminous tipped polished baton hour markers with black accents, black outer 1/5th second divisions with blue 5 minute markers, black subsidiary dials at 3 and 9 for 30 minute and 12 hour recording, date aperture at 6, polished pointed baton hands with luminous inserts, blue centre chronograph hand
Case: Brushed and polished tonneau form, screw down back, fixed bezel with black tachymeter, winding crown at 9, chronograph pushers at 2 and 4, No.204845
Strap/Bracelet: Fitted black racing leather
Buckle/Clasp: Signed steel buckle
Signed: Case, dial & movement
Size: 42mm
Footnotes:
In 1968 Jo 'Seppi' Siffert won both 24 Hours of Daytona and the 12 Hours of Sebring in a Porsche 907 firmly securing his place in motor racing history. Jack Heuer made a sponsorship deal with the Swiss sportscar and Formula 1 ace and in 1969 he wore a white dial Autavia on his wrist. The original Autavia worn by Siffert featured the word chronomatic underneath 12.

Siffert's career was brought to a sudden and tragic end in 1971 when his BRM crashed at Brands Hatch and caught fire with drastic consequences.

Movement: Runs when powered, chronograph stops and starts but will not reset, will require attention
Dial: Small scratch between 4 and 5, light marks to subsidiary dials
Hands: Likely relumed at some point, light surface scratches
Glass: Surface scratches
Case: Surface scratches throughout, opening marks to back, would benefit from a light clean
Strap/Bracelet: Used but wearable
Buckle/Clasp: Light surface scratches

We do not test any watches for their accuracy and as such timekeeping cannot be guaranteed.

We advise that if you are bidding on a watch, that you or your agents are completely satisfied with the condition of the lot. We recommend that all watches are serviced and polished after the sale as they are handled throughout the viewing period. Please note that although Bonhams endeavour to include reference to any replacement parts within our Condition Reports we cannot confirm that each individual element of the watch is original or that, if replaced, the replacement has been made using original manufacturer's parts.

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