Buy a copy a Petersons book at a store or Amazon. It is nice. My SRF review is here:
2020 9th ed. Standard Catalog of Military Firearms is out - Surplus Rifle Forum - www.surplusrifleforum.org
It was suggested by a member the book values are too confusing for you so I have halted posting useless data. However, I have found Phillip Peterson's Standard Catalog of Military Firearms as a generalized guide. Prices vary greatly by show, state, region, and condition. In WI most antique, pawn shops, and dealers use this as a rough guide. Sorry for the inconvenience. I must take the mods suggestion. This is not my home forum so I do not want to muddy the water.
Other posts, I cannot delete price info., so it stays as posted. No confusing additional info shall be added as to values. My apology to a fellow marine, and Jim