The first volume of “The References” features watches of the Reference 3646 from seven different number groups, which we have sorted since 2009 into 3646 / Type A to 3646 / Type G. Some of the featured watches appear in untouched, unpolished and unrestored condition which are very interesting to discover after more than 70 years of their use during WW2.

The coffee table shot shows the Rolex 618 / Type 1 movement of a 3646 / Type B watch with riveted plastic dial (“Radiomir Panerai”) and engraved caseback on page 230-231 in chapter II.II (first volume).

Enjoy reading! Our new “The Reference” books are in stock and can be ordered only in our bookstore.

Another visit at auctioneer Dr. Crott brought us another new database entry for the Reference 3646 / Type B. The yet unknown watch with the case number 1009992 will be up for auction in may, bearing the typical features of watches of the number group 1009925 – 1010024, representing the Reference 3646 / Type B.

Until today we have recorded only 13 existing specimen of this type of 3646 watches in our database, which is one of the smaller groups inbetween known watches of Type A to Type G.

The small Oyster stamp on the inner caseback is one feature aside the Rolex Cal. 618 / Type 1 movement with 17 Jewels and no Incabloc shock protection. Typical for this type of movement is the “ROLEX 17 RUBIS” engraving on the center bridge. As usual on movement used in watches of the Reference 3646, the balance cock bears the S-F / A-R regulation device.

The watch comes with the high version of the bezel, neccessary on watches with sandwich dials from Panerai. The bezel carries a domed Plexiglas, which is today in very good condition. The “neck” of the cushion shaped stainless steel case is still existing, on which an onion shaped “Brevet +” crown (Type 11) is screwed on.

The case has not been polished and appears with a nice patina on case, bezel and caseback. Also the watch comes with an old leather strap with a big “belt style” buckle, which we have seen on some other Ref. 3646 watches before.

We hope the watch will find a good new home and that it remain surfaced in the Vintage Panerai collectors world.
[Ralf Ehlers & Volker Wiegmann]

An example of our classification work: The reference 3646 is divided into seven production groups (Type A – Type G), of which the different caseback markings and numbers (inside) are just one of the most important indicators.

The illustration shows the following caseback versions:
Ref. 3646 / Type A Oyster Watch Co (large)
Ref. 3646 / Type B Oyster Watch Co (small)
Ref. 3646 / Type C Brevetee Rolex S.A.

You can read and see more about the different versions of Ref. 3646 watches in our 2nd book ““The References” 1930’s-1940’s.

Recently we added another Ref. 3646 / Type B watch into our database.
It expands the number group of today existing Type B watches from 1010015 to 1010024.

Typical features of Ref. 3646 / Type B watches are the small “Oyster Watch Co” stamp in the inner caseback and the Rolex Cal. 618 / Type 1 movement.