Well marked leather and iron parts with “R.I.A.” and “Rock Island Arsenal.”
The 1885 pattern carbine sling was designed to be used in conjunction with the carbine boot; so the width and weight of the shoulder strap could be reduced, and the carbine would remain secure in the troopers possession. The black bridle leather is 1 7/16 of an inch and full length.
Marked “R.I.A.” just above the brass tip. The square buckle is held in place by a section of leather (not black) folded over both sides of the end, and sewn down in typical arsenal method.
The blued iron snap hook and swivel slide devise with roller are well marked; the snap is a reissued Civil War contract piece made by “O.B. NORTH & CO. /NEW HAVEN, CT.” and marked on the inner surface of the snap. The square metal slide is marked on the inside flat, “Rock Island Arsenal.” Overall finish remaining is about 90% or better.
The best one of these had, let alone seen for sale.
The last collector maintained the leather tied as seen in the photos, and I have left it this way to protect the leather, which is truly excellent.