In my chronic eBay searching, I spotted an interesting trench watch case that was put together in a way I hadn't seen before. (Admittedly, I haven't been in the game for very long.) The movement hinges out of the front of the case in a manner reminiscent of models developed by Borgel. Except the crown is on the hinge side. One would think they perhaps borrowed from Borgel and used a two-part winding stem, thus keeping the stem from snapping, but then you'd expect to see a pin for setting the hands.
I have a feeling that the reason we don't see this style very often is probably the same reason that this one is missing its crown and stem. However they got this to work, it didn't work that well.
Anyway, I could theorize all day but perhaps one of you recognizes this guy. I meant to bid on it, but then I forgot about it and it sold this morning for $60. C'est la vie.
The listing: 1914 1st World War Silver Rode Watch Co Officers Watch Good Running Watch | eBay