A few more shots of the OPs gun:









Couple things, in no particular order:

Disc set strikers, first time I've ever seen it on a sliding breech gun. In 3 1/2 decades of owning, study, importing, fixing and enjoying various designs of sliding breech guns, that is a first for me.
I've never seen a non disc set striker Darne with a broken striker, however. Makes me wonder what they thought they were improving?

The checkering seems to be just about worn off. The wood below the sling fitting in the butt stock has been broken, and repaired, not exactly a seamless repair, but, functional, I guess. It appears to have been used fairly hard over the last 90 or so (I'm making an educated guess on age) years, and, I presume the gun still works. This is typical, in my experience.

The styling of the detonators (breech balls) was a stylistic treatment that could be specified on Regis Darne guns-I imagine the same option existed for this brand of gun. You don't see it much after about WWII.

Do tell, Carl-how are the barrels removed on your gun?

Thanks for the comments, Al. I'm thinking about it.

Best,
Ted