It can be difficult for "us," the folks who have been around a while, to wrap our heads around the current Enfield 'mania.'
After all, we still think of them as things you'd find in a barrel for $15 or 20 each; not even worth racking on the wall. Or the c-note specials of the 90s--and even then, there was little discrimination between a SMLE and a No 4 or the like. And, "everyone knew" the ammo was hard to find and "not good" (which was more about corrosive primers than bad components). Mind, in that era a decent 03A3 was about $250, and a really good M-1917 was $200, too.
Time have changed. Real beater Enfields are now well north of $400; there are realy specific collectors out there hunting the various variants just to have them. When you have people paying top dollar to get one of every factory that mad a No 4 Mk 2, they go for significant money now.
So, OP's mummy-wrapped copy is worth some serious bucks. Easily worth two shooter-grade copies. In terms of a trade-even, you want an all-correct, all-Remington 03A3 in 90% finish, and with perfect stock cartouches. Or an all-milled ≤'43 date Smith-Corona 03A3 at ≥90% finish with cartouches and a type "C" stock (an "S" stock but only with a bayonet included in the deal).
This is kind of a once in a lifetime deal; unless you go out and find another mummy-wrapped arm to sell. The Enfield market is hot and heating up. It's going to get a boost on 11 November 2018; and another about 1 September 2019 (and a stronger one in 2039, if any of us are about then).