Antique Pocket Watches Value

where can I find out about an antique watch made by J. e. Caldwell that I own?

The only thing I know about it is: It’s made by J. e. Caldwell Co. , It was made in Philidelphia in the 1800′s , and it is a very rear piece. I would like to find out some history, and value on this one of a kind ladies pocket watch. Picture availible soon.

http://www.righttime.com/rt/pre-owned/300-10023.htm
This is just one site. On Google type in j e caldwell watches and you’ll get several sites.