Job Number 180080

This Elgin is a grade 318, 0 size, 15 jewels, made about 1905. 

See the entire album for this project here.

I have seen this a handful of times... This is a hunter case. You can see the remains of the hinge at the left side, and the latch near the stem. At some point the front cover was broken off and is no longer with the watch.

The hunter crystal, which would be paper-thin and extremely fragile, has been replaced with a standard open-face, much thicker, crystal.

This allowed the watch to continue to be used as an open face.