I came across this Illinois pocket watch that belongs to a friend's great grandfather and both she and I would like to know more info about it. It currently runs but only when the positioned with dial facing down so it will definitely need service. I was curious if anyone had any idea how old it may be and could give me a rough idea on how much it would cost to service the watch back into usable condition? The case appears to be brass(?) and the crystal is scratched to all hell, but I love the patina on the dial and wouldn't bother to refurbish that.
Here are some photos I took of the watch in question.
Any help would be greatly appreciated. Thanks.