| Quadron Import 220 [message #12406] |
Fri, 01 May 2020 14:53  |
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Thojil
Messages: 650
Registered: May 2013
Location: Concorès, France
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Gruen Master |
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Model name : Import 220
Type : Quadron Crown Guard
Period/date : 1930-1933
Gender : Gents
Case Maker : Unknown, Swiss made (marked Alpina Gruen)
Case Material : Two-tone, steel with rose gold
Case Serial : 45821
Case Style no :
Caliber : 175
Movement Maker : Marc Favre Co. Biel (Factory "M")
Movement Serial : A451 (?)
Bracelet : After market
Other info :
Although very similar the dial is not identical to the Import 220 model as shown in Mike Barnett's Gruen Watch Catalog (page 107). This catalog also shows a second dial variation called Import 223.
Caliber 175 is a big unknown to me. There is no reference in any of the Gruen documentation available to me of this caliber. Though it is not a "Precision" or "Extra Precision" grade, the level of finishing is to a high standard when comparing to similar calibers like the 325 or 157. Not only the beautiful surface finishing on all sides, but also the one-piece milled yoke and the fact it has an intermediate setting wheel are indications this is a high grade movement.
My feeling is that it could have been produced by Marc Favre Co., Biel. Reason for that is Gruen was also sourcing their 157 and 165/167 Quadron calibers from M. Favre and the escape design is the same or very similar to caliber 157 (but maybe not unique to M. Favre?). Another point is I was able to carry over the detent screw from a 165 which was broken on my 175. I tried detent screws from many different Gruen calibers, but none of them fitted, the detent screw of the 165 was literally identical to the one on the 175. Also the set bridge design of caliber 165 resembles the design of this 175.
EDIT : Information has been updated in line with new info provided by fellow Gruenites. The movement is confirmed as caliber MF175, produced by Marc Favre Co.
[Updated on: Sat, 02 May 2020 15:32] Report message to a moderator |
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