UpThePole: These are rare - especially in that condition - and thus are hard to evaluate.
They just are seldom seen for sale in that condition.
I have two pre-64 Winchester Model 70 Bull Guns in caliber 300 H&H Magnum.
One is a pre-war low four digit serial number example in 99% condition with original sling - I value it at an easy $4,000.00+.
The other is a new unfired in the crate latter era gun - I value it at $5,000.00'ish.
I wish I could be more help - speaking of more help what is the serial number range?
Good luck in your dealings.
Hold into the wind
VarmintGuy
The thing is, the guy says its a "98%" condition rifle with "no throat wear". My estimate for "offer" is pretty much spot on. Fair for seller and buyer. Now, when the guy brings it here and shows pics and it's a 90% or less condition rifle and missing parts, that's on him.. No one else. He also does not say what year it was made or whether it's pre war or otherwise. Sure a lot of info missing, but the offer I suggested is very much in the ball park..