Thanks Roy, Justin and Franc Otte for the replies. Roy i know well the pictures you are talking about, i have the link to them below for anyone who doesn't know them. How greeners magnificent building was allowed to be pulled down i'll never know, what a shame. I also bought a book called "The Birmingham guntrade" last year, but didn't really find it good, to much emphasis on military firearms.
Justin, i'll be sure to investigate the gunnerman books lead, thanks.
Franc Otte, yes you are correct , the stubs are damascus, but blackened to match the rest of the steel tubes, i did not actually notice until holding the gun one day in bright sunshine and i could just make out the twist pattern. Sleeved barrels reduce the value of any gun i know but i didn't pay much for it to start with so it make no odds to me. Who ever did the sleeving made a nice job of it as the join is virtually invisible. I will attempt to take and load a few pictures tomorrow if i get a chance.
http://www.pbase.com/beppuu/pnicklinhttp://www.pbase.com/beppuu/image/81049516 
