This is a 15 jewel Elgin product, this one made about 1917.
This is a hunter case movement, having the stem at 90 degrees off the seconds hand (the location of the 4th wheel, inside), and it is mounted in an open face case. So that the watch is not a "side-winder", a dial has been used that places the 12 marker at the stem, leaving the seconds at 3:00. A conventional open-face dial on a hunter case, with an open-face case, would place the stem at 3:00.
The radial dial markers are also interesting and a bit unusual.