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Alpina - Gruen Tecno

Sat, 24 October 2026 17:11

Model name: Alpina-Gruen Tecno
Type: Wristwatch
Period/date: 1929-1935
Gender: Male, mais pourquoi pas également pour les femmes ! (but why not also for women!) ;-)

Case Maker: I’ll let the professionals tell me...
Case Material: That I know --> 0.900 silver
Case Serial: 406483
Case Style no: Alpina Gruen

Caliber: 877S
Movement Maker: It’s not shown on it, the A for Aegler ?
Movement Serial: 1867406

Bracelet: Without a bracelet, I plan to have (when I don’t know) a bracelet made just like back then.

Other info:
- Of my Gruen, she’s the one who makes the most noise: tick tock, tick tock.
- The gold-colored crown is not particularly attractive.
- The dial has developed significant yellowing beneath the crystal.
- In photograph number 4, the small "bear" standing on the side of the case is the official Swiss hallmark for silver watch cases of 0.875 fineness or higher, used from 1882 to 1934.
- I'm sure you'll be able to tell me many more details. ;-)

/vgforum/index.php?t=getfile&id=12503&private=0

1930's | 11 comments

White and blue box

Wed, 30 September 2026 19:08

Description
White with blue plastic box made in USA. Patent numbers on bottom box.

Period: 1936
Watch type: wristwatch, this one probably housed a ladies watch
Size: depth 9.7cm, width 7.9, height 6,8cm
Inventor: B Katz
Patents: D100026 CAN 53-1115 https://patentimages.storage.googleapis.com/dd/81/08/2fac137 c17f9c0/USD100026.pdf

Box maker:

/vgforum/index.php?t=getfile&id=12478&private=0

1930s | 2 comments

Identification of Alpina-Gruen Gilde

Sun, 20 September 2026 19:15

Model name: Alpina-Gruen Gilde
Type:
Period/date: 1929-1932?
Gender:?

Case Maker: Gilde
Case Material: Metal
Case Serial: 61030

Caliber: Gilde 485 (Universal 240?)
Movement Maker:Gruen
Movement Serial: none

Bracelet:

Other info:

[Picture Front]
[Picture caseback inside]
[Picture movement]
[Picture ad]

/vgforum/index.php?t=getfile&id=12462&private=0

Watches from the Guild | 10 comments

Cal 311 - Curvex Royal

with a black dial; Tue, 14 July 2026 03:42

There is another thread featuring the ID for the Curvex Royal. However, based on Kyle Roger's book, think that other watch is the Curvex Duke. This I believe is the better match to the Curvex Royal.

Model name: Gruen Curvex Royal
Type:
Period/date: 1936 or 1938
Gender: M

Case Maker: Wadsworth
Case Material: 14k Gold Fill
Case Serial: G 003773
Case Style no: 311 228

Caliber: 311
Movement Maker: Gruen
Movement Serial: 414564

Bracelet/Band: Recent replacement

This recent acquisition would be the Curvex Royal. Per discussion with Kyle it came with white and black dial. This is the black dial variant in a 14k gold fill case. While the ID on the black dial rests on Kyle's research in his book, the case style is still shown in print ads from the period.
/vgforum/index.php?t=getfile&id=12359&private=0

Disassembled for cleaning and re-staffing:

1930's | 7 comments

Gruen Time Hill Print

Mon, 29 June 2026 15:39

Ran into this Time Hill Print at the Kentucky Convention.

Henry Nurre Manufacturer of Cincinnati.

/vgforum/index.php?t=getfile&id=12324&private=0

Gruen Non Horological Related Products | 3 comments

Engraved Extra Precision Caliber 119

Sun, 28 June 2026 07:41

Hi everyone,
I wanted to share this Extra Precision caliber 119 movement with engravings and see what you guys think.
A few interesting points about this one:
1.It originally came in a solid gold case, but unfortunately, the seller melted the case down.
2.This is not a 50th-anniversary model. From what I’ve heard, the original factory description refers to this surface treatment as a "Guild style" finish.
3.There are visible milling marks on the edge of the bridge. It almost seems like it might have been modified from a caliber 117 to a 119.

/vgforum/index.php?t=getfile&id=12306&private=0

The caliber database | 7 comments

Pentagon

Wed, 27 May 2026 20:02

Model name: Verithin Pentagon
Type: pocket watch
Period/date: 1923
Gender: male

Case Maker: probably wadsworth
Case Material: reinforced gold (gold fill) with enamel
Case Serial: 366411
Case Style no: none

Caliber: V4
Movement Maker:
Movement Serial: 528261

Chain: Simmons nr 3 goldfilled

/vgforum/index.php?t=getfile&id=12275&private=0

1920's | 12 comments

Veri-Thin 'Master'

Wed, 25 March 2026 05:01

Model name: 'Master'
Type: Veri-Thin
Period/date: 1940s

Case Maker: Wadsworth
Case Material: 10K goldfill sterling silver back
Case Serial:G386170
Case Style no: 405-495

Caliber: 405
Movement Maker: Gruen
Movement Serial: 720275

Hello everyone,

I’ve been a long-time admirer of the craftsmanship and history behind Gruen timepieces, and I’m thrilled to finally join this community. As a newcomer to the world of vintage Gruen collecting, I’ve spent a lot of time reading through the wealth of knowledge here, and I’m eager to learn more from such an experienced group.

I recently acquired a Veri-Thin (likely a 405 495 case) on eBay, but I’ve run into a bit of a mystery. Upon inspection, I noticed the case back is marked as Sterling Silver. However, in the original sales posters and advertisements I’ve managed to find for this specific model, the descriptions usually list guildite back options.

Has anyone encountered a Sterling Silver variation for this model before? I’m curious if this was a specific regional release, a wartime material substitution, or perhaps something else entirely. I would love to hear any insights you might have on why this differs from the standard marketing materials of the era.

Additionally, the watch is currently missing its crystal. Does anyone happen to know the correct Watch-Craft brand number or a compatible G-S Flexo (or other brand) crystal model that would fit this specific case?

Thank you all in advance for your time and for welcoming me into the forum. I’m looking forward to being part of the conversation!

Best regards,

ytony2876
/vgforum/index.php?t=getfile&id=12190&private=0

1940's | 12 comments

Red with gold box VIP

Thu, 18 December 2025 21:12

Description: Red plastic box with golden rim and transparent gold accent. Gold rim. Red velvet inside. Red silk with golden application and VIP text. Gruen the precision watch. Metalized 14k label inside. Holes in bottom, probably for display stand.

Period: ca 1962
Watch type: ladies bracelet
Size: width12.1cm, height 5.6cm,, depth 7.9cm
Inventor:
Patents:

Box maker: BCN (braun crystal manufacturing co)

/vgforum/index.php?t=getfile&id=12030&private=0

Similar box (without VIP) in 1962 advertisment.

1960s and up | 0 comments

Long red with gold box

Thu, 18 December 2025 21:06

Description: Long red plastic box with golden rim and transparent gold accent. Gold rim. Red velvet inside. Red silk with golden application. Gruen the precision watch. Metalized price label inside.

Period: ca 1962
Watch type: ladies bracelet
Size: width 24.5cm, height 3cm, depth 4.9cm
Inventor:
Patents:

Box maker: BCN (braun crystal manufacturing co)

/vgforum/index.php?t=getfile&id=12025&private=0

1962 advertisment