Elgin Grade 320

Here's a broken mainspring, and its replacement.

The serial number stamp under the balance cock, on this watch, has a prefix symbol of a digit one with two lines above it. The first two digits of the watches serial number are 12 (12172049) , so there is sense to the symbol.

There is an unusual gold brooch with this one. It has a retractable chain inside the body, with a pin on the back. It works perfectly too. I have never seen another one like this.

This watch is an Elgin grade 320, 0 size, 7 jewels, made about 1906. 

The fancy inlay dial and gold hands are in great shape!