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Home » The Gruen Model Database » The caliber database » Caliber 626 (& Caliber 101 disambiguation) (8 3/4 Ligne, Hunter - FHF Robert?)
Caliber 626 (& Caliber 101 disambiguation) [message #11684] Fri, 22 November 2019 14:30 Go to previous message
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[Rampant edits] Had previously posted this on the sister caliber 103 thread, but I noted the 101/626 had not been documented. Thanks to Liz for help below with disambiguation of the two.

Here is an early WSC variant. 8 3/4 ligne. 16J, 3ADJ. Dial back stamped "101" (dials interchangeable). Front plate has the FHF patent, plus the lot # "17 7577". Could it be the maker was kind enough to mark the make year? "17" = 1917?

Dr. Rannft has cataloged this as the FHF Factory Robert (Gruen Factory R) 8.75'" movement herehttp:// www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2 uswk&Gruen_101. Haven't seen any front plate marks for Factory R, to see if my example matches the style & indicates it was finished there or ebauched to another factory. Most likely sourced directly from FHF/Factory R. Different from the 101, which was sourced as an ebauche from FHF & finished at the Gruen factory (first as regular adjusted, then ca1922 becoming a "precision" caliber)

Caliber 626
Configuration: Hunter
Example date: approx. 1917
Diameter: 8.75 ligne (approx 19.7mm)
Jewel count: 16
Adjustments: 3
Dial feet positions: 10 & 4
Dial release mech: release screws on back plate

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1) I'm wrong many times a day --just ask my wife!
2) Always seeking to learn more

[Updated on: Mon, 25 November 2019 14:48]

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