Since I decided to devote some time to collecting Eatons watches, I've managed to collect a half dozen or so, and it's become rather interesting to see the variations. Most of the 16s watches I've picked up are Gallet movements, but this one has a unique design to it that's new to me not only compared to my other Gallet's, but even compared to other contemporary watches.
From the outside, there's nothing too unusual:
Unlike my others, this has an American style dial (with a minute track instead of a 24hr track). You can see the distinctive Gallet regulator, and up by the crown wheel you can see the hole where the screw-lock for the stem-set mechanism should be (this screw is missing on several of my old Gallet's, probably broken by people who didn't understand what it was there for, or removed because it's rather inconvenient if you not actually worried about accidentally setting the time). The most notable thing is that it has the look of a full-plate watch (with the raised balance cock and barrel bridge).
That's where this movement becomes somewhat unique (to me, at least); the way they implemented that full-plate design:
Here you can see the standard Gallet keyless works, but its the balance and pallet bridges that stand out. I suppose this design makes it easier to adjust the end shake on these two most critical pieces, but it's a very unusual approach.
Also unusual is the crown wheel design:
Unlike nearly every swiss watch I've ever worked on, the screw for the crown wheel is a standard screw, not reversed. The crown wheel actually attaches directly to the underside of the barrel bridge and is a thick, one piece wheel with a square pivot to interact with the crown wheel gear.
I also noticed that the four timing screws on the balance wheel are all white metal; platinum perhaps? They wouldn't use an alloy for that, would they? The nickle flashing on the plates is very thin, and many of the plates show a lot of brassing. Almost seems ... cheap, compared to some of the others. The serial is in the middle of my other Gallet movements, assuming that the serials are consistent across different designs.