Job Number 170040

This one is another to feature Elgin's motor barrel. More examples here.

The watch is a grade 367, made about 1911.

This is a Father Time model, a name Elgin reserved for it's most high-end products.

See the whole album for this project here.
Find more horological content here.

It's hard to see, but the upper balance cap jewel is a diamond chip. There's no functional reason for this, it's just a nice touch.

Again it's hard to photograph, but there appears to be a watchmaker's mark left near the main wheel. Odd location choice...