Aaron, Cool find.  A quick google and there is quite a bit of information on the gentleman.....based upon the photo...I'd think he's about to say...."What in the bloody hell are you doing with my rifle case!"   

I was thinking it might be for one of his military rifles, a ZAR Martini,  but some research show these manufacturers made high quality sxs shotguns and double rifles
I don't know if i want to pay Pope money for one. my Sevens 44 1/2 w/ swiss butt (had it laying around) fits ok without being taken down, so it's not a takedown case as one might expect
Odds are I wont get the correct firearm for it, double rifles come at some cost, but you never know The label in it is one of a couple of styles, ( the fanciest one) I'll try to date it , might be for an affordable percussion shotgun in like condition. For now I might just place it above one of my doorways, or throw it in the closet, to be fondled occasionally
I love owning these wonderful pieces of firearm history. The beat up condition adds more interest to me. 

I'll be bringing it to my upholster soon. the original handle is there to repair to the case, loops are on the case for buckle straps 
I will preserve it without it looking fixed up as best I can.
It's in good hands.
I've been told to use wool cloth, not felt for the interior, gonna look for a old ladies coat at the goodwill as suggested so it won't look too new
Guess for now I'll fit it for my Bonehill conversion of a full size Martini, at least it's English and possibly period correct, and look about for a proper double rifle of that make I can afford
The Bonehill has a cool LSA tang sight mounted.
That's my plan and I'm sticking to it.

I've been told by a member whose knowledge I respect that a chemical in felt will hurt the rifle's finish if left as quickly as overnight in a felt lined case. I don't store my rifles in cases, but in the safe.
Found a perfect used 100% wool cloth long woman's coat on Ebay for $20. Looks very good, but not brand new.
New felt will look just that, new.
I must research this a bit further.
Still trying to date the case by the label, it seems to be a very early one going by the address. long before BPCR's
To me, this is a big part of the fun of this sport.

What a wonderful find!  As a semi-retired professional restorationist/conservator, my goal would be to have a sound, usable, and presentable case that looks it's age.  Therefore, I'd first make any repairs to the case itself.  Beyond that, I'd leave the lining alone except for a light vacuuming, have the carrying handle and straps professionally restored/replaced, and consider tacking any any loose canvas back down.

Bill Lawrence