The Heuer Autavia 3646, 1st execution dial and 2nd execution hands, was manufactured with two bi-directional bezels: one each for 12 hour and 60 minute. We see a few more 60 minute bezels than 12 hour, though I have not been able to discern any pattern, if there is one, as to when one bezel was used versus the other.

The 60 minute bezel is black with silver numerals on the 10s and plots for each minute other than on the 5s, with the exception of 12 o’lock, where there is an inverted luminous triangle.

The 12 hour bezel is black with silver numerals, and an inverted luminous triangle at 12 o’clock. There are no minute marks.

Within the set of Heuer Autavia 3646 1st execution dial and 2nd execution hands pieces seen, the crown is primarily unsigned dome (see below). We do see a few pieces with signed crowns featuring the Heuer logo, but given nearly all are unsigned, I believe the signed crowns are either replacements or otherwise not intended as the crown originally designed for this set of Autavia 3646.

Round pushers are found on the 3646, with pusher diameter of [TBD], height [TBD] and tube diameter of TBD].

The Heuer Autavia 3646, with 1st execution dial and 2nd execution hands, was produced with a stainless steel screwback 38mm case. The serial number is engraved in between the lugs at 6 o’clock.

Caseback

This case has written around the caseback
STAINLESS STEEL CHRONOGRAPH –
WATERPROOF – GUARANTEED 330 FT UNDER WATER –

Then, centered on the caseback, about 1/3 of the way from the edge, is
AUTAVIA
[Heuer logo]

The exception is for the few ‘KINGON‘ branded pieces we see, where ‘KINGON’ text is below AUTAVIA instead of the Heuer logo. The text style for these pieces is different than what we see on the Heuer-logo casebacks, as they were likely delivered blank and later engraved by/for Kingon.

Some casebacks will have a ‘C’ number, which is in the pattern ‘C xxx-x’ or ‘C xxxx-x’ (I haven’t seen others with fewer numbers, but presumably these exist). This number was used by Cuanillon & Cie, the company that was Heuer’s Swiss distributor. I have not heard of records from Cuanillon, but it is believe that each C-number was unique to a watch. If you know of records, please contact me.

Inside caseback

The inside caseback has a few different designs. With so few pieces known, I have very little information on inside caseback stamping.

I have seen multiple pieces with each of the following inside caseback design:

1. Slightly above center (488xx-489xx):
ED. HEUER & CO S.A.
SWISS

2. Toward the top of the inside caseback, about 1/4 way down from top edge (522xx)
[Heuer logo]
ED.HEUER & Co
SWISS

There are two additional inside caseback stamping examples I have seen. As I have seen only one of each, I will hold off to providing images.

1. Toward the top of the inside caseback, about 1/4 way down from top edge (1 piece, 488xxx):
ED. HEUER & CO SA
SWISS

2. Starting toward top of inside caseback, extending all the way to below center (1 piece, 487xx):
[Heuer logo]
ACIER INOXYDABLE (or ‘INCXYDABLE’)
[Huegnin Freres logo]
ED.HEUER & Co
SWISS

The case of the 3646 was modified during the period with the 2nd execution dial (I believe those pieces have wider bevels).

The Heuer Autavia 3646 is powered by the manually wound Valjoux 92.

The movement on nearly all pieces features stamping on the chronograph bridge.
On one arm:
ED. HEUER
& CO
and on the other:
SWISS

and train wheel bridge stamped:
UNADJUSTED
SEVENTEEN 17
JEWELS

’92’ is stamped at the edge of the movement, with the Valjoux symbol (“R”) immediately above.

I have not seen any import codes on the movements I have seen, although total pieces with movements shown is a relatively small sample size.

With few Heuer Autavia 3646 first execution dial and second execution hand sales, there leaves little information available to establish trends. We can clearly see, however, the value of these pieces in the early 2000s, which was in the thousands of dollars, spiking, perhaps not surprisingly, at the Heuer-themed (and only two seller) Phillips’ Crosthwaite & Gavin Collection auction. And this holds true across other Heuers as well. Since this time, Heuer 3646 prices have pulled back (corrected (?)) to a $25k – $35k range for very good examples.

You may use the filters in the table at bottom to view data for a subset of case numbers, and this will filter the price trends chart as well.

Please contact me if you know of any other pieces, have serial numbers to contribute, or corrections.

As with the rest of this Website, the following table, and data contained therein, is subject to Alpha Hands LLC Terms and Conditions

The above chart and table, and data contained therein, is subject to Alpha Hands LLC Terms and Conditions