Knowledge Needed

Any knowledge of this piece, age and value would be appreciated. It was packed back 25 years ago when we moved along with some more iron and sorta was forgotten. I opened a box on a clean up and found them again. Item is not for sale, I'll just hang them up in the garage. On the bottom of the pot it has on the side away from the handle :
NO 7
J & J Siddons

on the handle side

West Bromwich
4 Quarts

Looks british and it also looks like they are still in business... although not making cookware like that any more.

http://www.jjsiddons.co.uk/page.asp?node=1&sec=Home

http://www.nationaltrustcollections.org.uk/object/1553295

and a little bit of history (which dates back to at least 1846).
http://www.managementtoday.co.uk/uk-j-j-siddons-founders-estate-1-2/article/409786