All about Gruen

[Fred]

Signature(s): Gruen Watch Co.
Maker/Supplier: Unknown
Identifier: note simple stud carrier & middle bridge; regular Verithin sn line (400k-500k)

In the early 1920s, at least the 17J version (92-93) remained and was reclassified as Precision. In the 1910s, it was not marked as such. Setting works updated in 1920s—examples of both in movement pics.

Factory description

Setting works

Cal 92-93: 17J. 92 is OF, 93 is Hunter (1920s version below—from a Strap 11—stamped “92” between bridges & on dial back). Hunter not seen. Dial side—new style setting works (1920s)

17J OF

Dial side - new style setting works

Cal 90-91: 15J. Hunter (likely 91) not yet seen. Dial side—old style setting works.

15J OF bridges

15J OF dial side - old style setting

[Fred]

Here is one Swiss made gilt dial variant, if of interest, from the above 90-91 (15J OF). Many gilt dials have a caliber # marked on back. This one only has a “3” (or possibly “35”/“36”), followed by “128”

Front

Back

[Fred]

The bridge stamp & dial stamps from my Cal 92, orphaned from a 1920s Strap 11.

Bridge

Dial front

92

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