You have a very nice Winchester M1 Carbine. I'd have to see the stamps on ALL of the parts, but the good news for you is that from your pictures you have an un-touched (non-rebuild) authentic Winchester M1 Carbine. I've misplaced my Winchester Dates of Manufacture hand book, but I'm thinking yours is 1942/1943.
Nearly each and every M1 Carbine that was issued for service in WW2 went thru a rebuild process. During that process, they were torn down into little pieces and rebuilt with then-current spec parts. Yours still sports the early flip-type rear sight, push button safety, flat bolt and the barrel band without the later bayonet lug. Going on that alone, I'd say things look really good for you.
I am not a Winchester M1 Carbine collector. From what I've learned over the past 50 years that I've owned and fired .30 Carbines, to those who collect them prefer the Winchester made Carbines to most of the others. Those who collect them have very deep pockets. If yours was just a 'shooter' or a 'mix-master' (arsenal rebuilt Winchester) I'd hazard a guess of $650 to $750. If all of your rifle is original Winchester and original to the rifle, I'd expect you could easily double that. If I were you, I'd buy a Collector's book on .30 M1 Carbines and go thru it to study the markings. You seem to have a dandy there. Hope the interior of the carbine matches the exterior in condition.
Just for grins and giggles - the .30 Carbine was never loaded with corrosive primed ammunition. The .30M2 (BAR, Garand and Springfield ammo) and ammo for the .45 ACP were loaded with mercuric primers - but the Carbine's small rifle primers were non-corrosive from the start. I can't recall the reference that I learned this from, but I clearly remember learning this. So don't bet anything on it - I can't back it up. Just a bit of trivia.