I'm still trying to understand and piece together the connection between Marc Favre and Bulova as we see a number of early Bulova movements co-stamped with 'Favre'.
Here's a Lady Maxim I have with an almost identical movement but stamped 'Bulova W.Co'

I've seen the following combinations:
- Favre W Co.
- Marc Favre
- Bulova W.Co + Favre W.Co
- Rubaiyat + Marc Favre
My thinking (somewhere deep down in the darkest corner of my brain) is that both Bulova and Favre shared a factory or supplier, or Favre was in fact manufacturing the movements and supplying to Bulova. Maybe Bulova were using/leasing/purchased Favre's manufacturing equipment.
We are seeing a lot of cross over in these early movements and Bulova's claim that they were manufacturing their own movements in Switzerland may be (in part) explained by them leasing/purchasing equipment from a local established company in order to do so.
Maybe Bulova bought out Favre's stock as part of a buy out.
It has always puzzeled me how Bulova went from a small time player to a 'force majeure' in such a small period of time in the late teens/early 1920s. Perhaps buying a factory alreay build with the neccessary machinery and stock/parts would explain this.
Rev, any info on this movement type and Marc Favre?