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Verithin patent?

Sat, 16 July 2022 01:35

I feel like I should know this, but what was the patent for the Verithin wheel construction?

Research | 2 comments

Movement ID

Thu, 14 July 2022 16:23

I don't recognize this and thought it might be of some interest to the caliber junkies around here.
Looks high grade, but not marked "Precision Extra", or even "Precision". In a platinum pocket watch case of dubious originality, but I'm guessing probably in the 10-13 ligne range.

Model Identification and discussion | 32 comments

Hunter cased Verithin

an early-ish one?; Fri, 08 July 2022 00:32

I must admit that I really have a huge hole in my knowledge when it comes to pocketwatches. Once in awhile, I see one that strikes my curiosity. However, I've always wanted a hunter cased Gruen pocket watch. I have rarely seen them. Art Bissell had some (or showed some) that were way early - Link to NAWCC forum. And another example. The ones he did have he has since sold off.

I've never seen one of the V4 or the similar movements in anything but a open face case,(well... apparently I didn't look hard enough. Here is one. but recently (e.g., this year) I've seen two Hunter cased Gruen with the early veri-thin (like here and here) on eBay.

The first one I saw several months ago I thought housed the nicer movement. I was out bid. The second one was a 'buy it now', but it sat for some time. I eventually reached out to the seller and we negotiated a deal. I'm assuming the "permanent" marking is the same on the other "warrantied" cases that were 10-year, 20-year, etc. but with even more gold.

Maybe this watch is new to you, a fully marked hunter cased watch. It is only the 3rd time in my notes and in 10 years of looking that I have seen one. The only thing that I have done since it arrived was to source and affix a correct fitting crystal. One of the other members in the local NAWCC chapter helped me with that.


Would appreciate any insights or observations you might have.

edit - See striked out text.

Model Identification and discussion | 19 comments

Unknown Sterling silver Mantouche ca1920

Cal 861 Large Cartouche aka Rectangular Wrist Watch; Wed, 06 July 2022 03:44

Model name: Unknown
Type: Large Cartouche / Rectangular Wrist Watch
Period/date: 1919-1922, likely 1920
Gender: Female?

Case Maker: Unmarked
Case Material: 0.935 sterling silver
Case Serial: 2931
Case Style no: n/a

Caliber: 861
Movement Maker: Factory L / ebauche or finished movement by Charles Hahn (Landeron)
Movement Serial: none on dial side; last 2 digits on parts are 89

Bracelet: aftermarket extensible link bracelet, with 1929 patent

Dial Maker: Albert (Albrecht) Beyeler-Favre, Geneve
Dial material: sterling

Other info: case is hinged at top and was assayed in Geneva. Last 2 digits of case number stamped on inside bezel corner, along with many hand inscriptions. Refinished dial. A clean, bright white dial was the first indication of trouble—and the print that is a later Gruen layout only makes it more difficult to ID. It should be fantasy script, I’m thinking


1920's | 6 comments

J. Walter Thompson Advertising Agency

Mon, 04 July 2022 13:44

Stumbled on this today, thought some of you might be interested.

Duke Library Archives has a collection of J. Walter Thompson material, some of which is Gruen related: &group=true&search_field=all_fields&q=Gruen

Also, found this analysis of JWT Gruen advertising in French:

JWT Case Study no3: Gruen Watchmakers Guild (1922-1932)

Reference | 0 comments

Gruen 21 Veri-Thin 435/901 Black Dial 'Cortez'

polished crystal! fresh strap! family picture!; Fri, 01 July 2022 05:57

Model name: Cortez (per G-S)
Type: 21 Precision (Veri-Thin)
Period/date: c. 1955
Gender: M

Case Maker: Star
Case Serial: o804167
Case Style no: 901

Caliber: 435
Movement Maker: Gruen Switzerland
Movement Serial: 2A 262145

Bracelet: Rios Ostrich Quill

Other Info: 3-6-12 dial with raised 21 shield.
Dauphine hands, small seconds possibly incorrect. Crystal G-S CMX 330-6, W-C P14MA219(184). Bezel 26.8 x 23.4 x 7.7 mm. Lug-to-lug 36.9 mm. Lug Width 19 mm.


As found:

Model Identification and discussion | 7 comments

Gruen Strap 475 400C/526 Marcus

Thu, 30 June 2022 18:37

Model name: Marcus
Type: Strap 475
Period/date: c.1944
Gender: M

Case Maker: Wadsworth
Case Material: Sterling Rose/Coral 10K.GOLD FILLED
Case Serial: G475716
Case Style no: 526

Caliber: 400C
Movement Maker: Gruen
Movement Serial: 2-593143

Bracelet: Kreisler Sterling Rose/Coral 10K GF "Basketweave"

Other info: Crystal W-C 4MA247[175], Bezel 27.6 x 20.7 x 5.1mm, Lug-to-lug 39mm, Lug Width 14mm.


1940's | 1 comment

Gruen 21 Precision 335/791 Black Dial

new crystal installed!; Wed, 29 June 2022 20:15

Model name: 335/791
Type: "21"
Period/date: 1953
Gender: M

Case Maker: Gruen
Case Serial: C825404
Case Style no: 791

Caliber: 3351
Movement Maker: Gruen
Movement Serial: Not on watchmaker side / bridges

Bracelet: JB Champion flex with split edge motif matching bezel, believed original to the watch.

Other info: Painted "21" logo at 12. Bezel 24.8 x 23.3 x 5.0mm. Lug-to-lug 34.6mm. Lug width 18mm. Crystal SUC RMS 116-12T / W-C 12MA 204 / W-C P11MA 204.

As found:

Model Identification and discussion | 5 comments

Strap 110

Wed, 29 June 2022 18:20

Model name: strap 110
Type: strap
Period/date: 1928-1930?
Gender: male

Case Maker: wadsworth
Case Material: nickel
Case Serial: 8281395
Case Style no: 2

Caliber: 885
Movement Maker: fhf
Movement Serial: 181586


1930's | 19 comments

High oblique service box 2

Wed, 29 June 2022 17:55

Fake leather paper and wood box. discoloured double golden rim. loose insert watch holder. Gruen service crest inside.

Period : 1925-1930
Watch type : unknown (cartouche or baguette with ribbon or bracelet?)
Size : 11.1cm wide, 4 cm high, 6.3 cm deep. Insert 7.5x2.1
Inventor : unknown
Patents : No date or patent mentioned on the box.

Box maker : unknown


1920s | 2 comments

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