What would be a fair price for an unfired, perfect condition, recent manufacture M25-13 (Blue), .45 Colt, Mountain Gun, complete with box and all original documentation, and stuff, that came with it? Can't find this listed anywhere, and it's not in the Blue Book of gun values. This gun is technically not new since it would be purchased from the original owner of the gun, not a dealer.
I would give $750 for that Mountain Gun, no doubt about it. Its possible that someone might be willing to pay $800 - $850. New, unfired in box definitely adds a premium. The .45 Colt is a caliber which some shooters (me included) really covet ( specially those who reload). Are you selling or buying ? If buying, you won't be disappointed, if selling, you'll always regret letting this one get away.
I bought a 625-9 Mountain gun today in almost NIB (has faint turn line), including; box, paper work, anti rust paper, lock, keys, except for the fired case. $550 from my local Cabela's. Not quite the same piece but might help with a ball park.
-Jesse