Just looking at the way it's set up, I would call this a 91TS.
Rifle had a longer barrel, Carbine was a super-shorty with a half-stock. The TS had about 21 inches of barrel. This one should have factory and date stampings; be interesting to know when and where and all that.
Interesting historical point is that the Carcano was a fine, light rifle, true and accurate and it was a tribute to the native inventiveness of our glorious Italian Allies. The rifle only BECAME a piece of utter crap when Mussolini sent his troops into France in 1940.
In a war, you must denigrate and demonise your enemy in order that the war may be presented as a crusade against Evil. "The first casualty is Truth." Wars actually start because of the incompetence of politicians. Quickest way to denigrate your enemy, if his equipment isn't up to fit and finish of yours, is to point out its gross inferiority, which then transfers to the guy who carries it. Carcano fit and finish was all on the inside, where it couldn't be seen, and so the Carcano became terribly inferior about mid-Summer 1940.... and the rifle itself had not changed one iota.
They are a dandy little rifle and capable of a lot more than most folk realise. Of course, it really helps a lot if you don't run them with bullets which are 5 thou undersize!
Glad to see that I'm not the only crackpot who likes these. This is a really nice example.
Who cares what it's "worth"? What's it worth to YOU? THAT is what matters.
Really nice little piece of history here.
Enjoy.