The Ref. 3646 / Type E will be auctioned on 21 November 2021 at Webb’s Fine Jewels, Watches & Luxury Accessories. You can read more about this watch here or go directly to the auctioneer’s website (Lot 423).

Features of the watch:
Reference: 3646 / Type E
Dial: “California Dial”
Case number: 2609XX
Movement: Rolex Cal. 618 / Type 1 mod.

[Photo with kind permission / courtesy of www.webbs.co.nz]

Interesting read can be found in our book “History2” on page 628-629, too.

Webb’s auction house from Auckland / New Zealand contacted us recently, providing information and photos of a yet unknown Ref. 3646 / Type E with “California Dial”. The watch appears with the matching flat bezel and both lead seals above and below the 47 mm cushion shaped case. The outer caseback is not engraved and the inner caseback is missing the Rolex hallmark and reference number, which is a typical feature of Ref. 3646 / Type E watches. The onion shaped winding crown (“BREVET +” Type 11) can be screwed down onto the collar of the 47 mm cushion shaped case with soldered lugs.

The “Error-Proof Radium Dial” by Rolex, with its railroad track minute markers and “SWISS MADE” signature at six o’clock, features half arabic and half roman numbers with luminous material applied from above.

Since 2016, five new watches of the number group Ref. 3646 / Type E surfaced, two of them expanded the number group from 260856 – 261097 (as of 1.1.2016) to 260850 – 260111. We have 31 Ref. 3646 / Type E watches recorded as of today, including this specimen from New Zealand.

Features of the watch:
Reference: 3646 / Type E
Dial: “California Dial”
Case number: 2609XX
Movement: Rolex Cal. 618 / Type 1 mod.

You can read more about Ref. 3646 watches with dissappeared Rolex hallmarks here.

[Photos with kind permission / courtesy of www.webbs.co.nz]

Vintage Panerai watches with “California Dials” are recorded in several number groups of the Reference 3646. Read our book “The References” 1930’s-1940’s to find out, in which of the seven number groups (3646 / Type A – 3646 / Type G) this type of dial has been used and which number group features almost half of all known 3646 watches with “California Dial” today.

The “Error-Proof Radium Dial” by Rolex, with its railroad track minute markers and “SWISS MADE” signature at six o’clock, features half arabic and half roman numbers with luminous material applied from above.

Information on “The References” 1930’s-1940’s can be found here. The new “The References” books can be ordered only in our bookstore.

Enjoy reading!
[Ralf Ehlers & Volker Wiegmann]

Sotheby’s will auction a Ref. 3646 / Type E with “California Dial” and Rolex Cal. 618 / Type 1 mod. movement in their upcoming auction Important Watches in Hong Kong on 8 October, 2019 (lot 2310). The watch is recorded in our database since May 2013.

The “California Dial” is corresponding with the flat bezel of the watch – a typical combination of dial version and bezel (a Panerai dial with its sandwich construction would need a higher bezel due to its height). The “Error-Proof Radium Dial” by Rolex, with its railroad track minute markers and “SWISS MADE” signature at six o’clock, features half arabic and half roman numbers with luminous material applied from above. The onion shaped winding crown (“BREVET +” Type 11) is screwed down onto the collar of the 47 mm cushion shaped case with soldered lugs.

Noteworthy, this watch is one of only three known pieces within the number group Ref. 3646 / Type E which show a Rolex hallmark and reference number on its inner caseback. Usually, known watches of the number group Ref. 3646 / Type E only bear their case number on the inner caseback as typical feature. We have pointed this out in our book “The References” 1930’s-1940’s in chapter II.V (page 537) and II.VI (page 579-581), where this watch is mentioned by its case number several times.

Since 2016, three new watches of the number group Ref. 3646 / Type E surfaced, two of them expanded the number group from 260856 – 261097 (1.1.2016) to 260850 – 260111 (29 watches recorded as of today).

Features of the watch:
Reference: 3646 / Type E
Dial: “California Dial”
Case number: 260918
Movement: Rolex Cal. 618 / Type 1 mod.

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

[Photo of the Ref. 3646 / Type E watch courtesy of www.sothebys.com]

We recently added another Ref. 3646 / Type G with “California Dial” into our records. It will replace the watch formerly called “the last 3646” since its case number is higher than the Ref. 3646 / Type G with painted brass dial, auctioned at Antiquorum back in 2014 (read more here).

Typical features of Ref. 3646 / Type G watches are the removed / not existing Rolex stamp in the inner caseback. You can compare the different inner caseback engravings in Ref. 3646 watches here. The center of the caseback (with all-over decorative polish inside, not engraved on the outside) on this watch is thinner than watches featuring the Rolex SA hallmark. Read more about these interesting details in our book “The References” 1930’s-1940’s on page 486-487 (decorative polish) and page 645 (topography).

The “California Dial” is corresponding with the flat bezel of the watch – a typical combination of dial version and bezel (a Panerai dial with its sandwich construction would need a higher bezel due to its height). The “Error-Proof Radium Dial” by Rolex, with its railroad track minute markers and “SWISS MADE” signature at six o’clock, features half arabic and half roman numbers with luminous material applied from above.

The onion shaped winding crown (“BREVET +” Type 11) is screwed down onto the collar of the 47 mm cushion shaped case with soldered lugs. A black leather strap with small pin buckle is fitted onto the soldered lugs of the watch.

The Rolex Cal. 618 / Type 1 mod. movement in this “California Dial” watch is another important element, which appears with confirming details of the today recorded watches in the number group 3646 / Type G.

Features of the watch:
Reference: 3646 / Type G
Dial: “California Dial”
Case number: 31753X
Movement: Rolex Cal. 618 / Type 1 mod.

Read more about the Ref. 3646 / Type G in chapter II.VII of our book “The References” 1930’s-1940′s on page 608-645.

More than two hundred watches of the Reference 3646 are registered in our database today. Among all different Vintage Panerai models, the 3646 marks the reference with the most known specimen in our records. Nine years ago, in 2009, 143 recorded watches were featured in the first (sold out) edition of our book “The References”. Within the entire serial number sequence of the reference 3646, we differentiate between seven different variations (3646 / Type A – Type G). The photo on the left shows a Ref. 3646 / Type E with “California Dial”, which is featured in chapter II.V (page 544-551).

In our book “The References” 1930’s-1940’s the watches of the entire reference 3646 are featured in chapter II with more than six hundred pages in the chapters II.I-II.VII following an intro on page 40-49. The seven different variations can be found in our reference quickfinder on page 14-20.

Chapter II.I = Reference 3646 / Type A
(featuring two different watches on page 50-169).

Chapter II.II = Reference 3646 / Type B
(featuring four different watches on page 170-247).

Chapter II.III = Reference 3646 / Type C
(featuring seven different watches on page 248-397).

Chapter II.IV = Reference 3646 / Type D
(featuring nine different watches on page 398-531).

Chapter II.V = Reference 3646 / Type E
(featuring four different watches on page 532-573).

Chapter II.VI = Reference 3646 / Type F
(featuring two different watches on page 574-607).

Chapter II.VII = Reference 3646 / Type G
(featuring two different watches on page 608-645).

See the different inner casebacks of Ref. 3646 / Type A – Type C watches here, as well as the inner casebacks of Ref. 3646 / Type D – Type G watches here. Read about the 3646 watches with disappeared hallmarks here.

Phillips will feature a rare Ref. 3646 / Type E with “California Dial” dial in their Winning Icons – Legendary Watches of the 20th Century, which will be held on Thursday, 26 October 2017. The watch comes with an onion shaped Rolex crown (Type 11) and Rolex Cal. 618 / Type 1 mod. movement. The watch is recorded in our database since 2003. It is one of only two watches in the 3646 / Type E number group with the lettering “ROLEX” (presumably added later) engraved on the right-hand side of the central bridge (wheel train bridge).

At the release date of our book “The References” 1930’s-1940’s, 26 specimen of the 3646 / Type E number group were recorded in our database (read page 532-573 in chapter II.V). Only one further 3646 / Type E watch with “California Dial” surfaced since then, and it was auctioned in 2016 at Phillips, too. Lot 16 is published in our book “The References” 1930’s-1940’s on page 552-559.

Further info on this watch (lot 16) can be found here.

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

[Photo with kindly permission / courtesy of www.phillips.com]

Two Vintage Panerai watches will be up for auction in the WINNING ICONS auction at Phillips on 26 October 2017 in New York. Inbetween a total of 50 watches in the auction with the subtitle “Legendary Watches of the 20th Century”, Lot 16 is a 3646 / Type E with “California Dial” (photo), followed by Lot 39, a Ref. 6152/1 with 8 mm Rolex crown and “Marina Militare” dial. Find further info on both watches in our Watch Point.

[Photo with kindly permission / courtesy of www.phillips.com]

Since we added a Ref. 3646 / Type E “California Dial” into our database in March 2016, the personalized caseback of this watch got our attention, too.

After the watch was auctioned earlier this year in May at Phillips (The Geneva Watch Auction THREE, lot 122, read the note in our watch point here), we continued research on the known personal dates, scratched with a sharp tool onto the caseback of the watch: Name, date of birth and home town of Heinrich Hauenstein.

[Photo with kindly permission / courtesy of www.phillips.com]

Having already a few watches with personalized casebacks recorded in our database, we wanted to find proof about the personalized dates in general and if further information about the history of the first owner of this watch could be found more than 70 years after its use.

Since we exchanged information about Heinrich Hauenstein with his family, we know that he has passed away in 1976 at the age of 55. He was married but had no children. In 1951 he was a founding member of a shooting club in his hometown Solnhofen (Bavaria/Germany).

The family has recently shared a historical photo of Heinrich Hauenstein with us, dated October 1942 on the backside, showing him as a sailor of the German Kriegsmarine / Navy. To put a face behind the name on the caseback, we are pleased to publish here the photo from 1942 aside the auction catalogue from Phillips.

[Historical portrait photo with kindly permission / courtesy of Heinrich Hauenstein’s family]

One more piece to the puzzle added, another gap closed and a remarkable and noteworthy match in our Vintage Panerai database: Phillips features a rare Ref. 3646 / Type E “California Dial” on May, 15th (lot 122, The Geneva Watch Auction: THREE). Added into our records in March 2016, this specimen bears the important and typical internal and external details of a Ref. 3646 / Type E watch.

Watches of the Reference 3646 / Type E are featured in our new book “The References” 1930’s-1940’s in chapter II.V (page 532-573). With this new addition we have now recorded 27 watches in this group, extending the 3646 / Type E number range downwards by six numbers, filling another gap between the watches of the Reference 3646 / Type D and 3646 / Type E.

The information and measurement results provided by Phillips confirmed the cross-section of a 3646 / Type E caseback, which we put in the focus on page 536-539 of our new book. The caseback of this watch has been engraved with a name, date of birth and hometown of the first owner from Bavaria/Germany.

The Rolex Cal. 618 / Type 1 mod. movement in this “California Dial” watch is another important element, which appears with confirming details of most of the today recorded watches in this number group.

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

[Photo with kindly permission / courtesy of www.phillips.com]