Edwinson Green was a very fine gunmaker of Cheltenham Gloucestershire.He built a one of the first O/U and patented it this was subsequently bought by Purdey.Original Purdey O/U's were indeed E C Green patents.I think George Gibbs of Bath then bought the name and the manufacturing rights.
E C Green is well documented, you have a very fine gun made by a very highly regarded artisan.Reloading Pinfire cartridges is no big deal.If you get all the basic bits from the link above you will be set up.I used to make my own from std 12 guage but I had to machine the chamber rim to accomodate which spoils the originality of the gun.Better to use custom made brass cases unless of course you have a supply of old pinfire cases?????
Good luck she's a beauty.
