All about Gruen

[Fred]

Here is a baguette— Style # 135—with 7J cal 329, I think circa 1934-5. I do not have a model name.
-case # Gruen 2,267,687
-mvt sn 270,641

It is a puzzle, as the master book shows this model with cal 609 (a later 7J baguette movement) & different dial. Here are notes:
-my dial is shown on baguettes 139 (cal 327), 107 &108 (cal 329)
-my dial is signed “329” on back
-last cal 329 model in book in baguette 100 series is 134
-first cal 907 model in book in baguette 100 series is 154
-all 3xx baguette calibers disappear at same time

I believe it’s possible this model launched with cal 329, then 329 was discontinued. Net, model converted to 907, since both are 7J. It’s impossible to rule out a movement swap, but I can’t imagine anyone would choose another 7J movement.