it will, most likely hurt the price-- you can spend some time at Gunbroker and watch the variance on price to get an idea between touched and untouched.
I will support an earlier comment about Rimfire Central. There is an exceptional amount of quality info on finishing all types of wood. One fellow has a process of mixing layers of armorall and tru oil. His process , ultimately, is to lay down countless thin layers and sand/polish between each. THe amorall dramatically accelerates the tru-oil drying time. Also at that forum is a fellow named George (Noremf) , and he has posted countless "stickies" on useful info about conventional wood finishes. Its all excellent info for guys like us.
My wood finishing process is a safe process of layering polymerized tung oil ( 20 to 30 coats) with sanding/polishing between each. That seems to be the key for those ultra-smooth, translucent glass finish that some like.
Others like that European oil finish, where there are far fewer coats, and the wood is more open with a thinner, flatter finish. I use 8 to 10 ultra thin coats of pure tung oil to get that, with mild sanding between the first few.