Yeah Boy! you have a winner here. Congratulations! This is one fine Carlile rifle. Whatever you had to give for it wasn't too much. You have a good eye and I hope you find many more.
There are a few areas that could be improved on the gun. It appears that some inlays have been replaced and some may still be missing. The replacements look like German Silver and are not engraved. The cheek rest would have had a beautiful eagle with wings spread out beyond the oval. There is a dandy J. Johnston rifle with that type of inlay. If you want a copy for style and design, get in touch with me. It looks like all the silver was engraved, as is the brass, and surviving inlays. Use real silver .999 fine if you can get it. It tarnishes fast and looks good.
If the lock proves to be new, file it up some and engrave it to match the commercial locks of the period. Otherwise, find, or make, a correct replacement.
The stock appears in places to have been stripped, and/or perhaps sanded, to lower the new inlays. Suggest that you contact JTR to see if he can advise you on some remedies for this as can others, no doubt.
It can be given a surface age appearance; the color is a wowser. Don't touch that.
Huge plusses on the gun are the barrel engraving, the superb carving, the wonderful and unusual patch box, the furniture engraving, and the good wood in the stock.
You have one of old Henry's finest creations, it appears. Congratulations again.
Thank you for letting the rest of us drop by and take a good look at her.
Best-Dick
