You can estimate the era and rarity of your pistol by the roll markings on the frame and barrel: Go to product viewer dialog for this item.
Original "pinned" magazines are rare and can be worth $100+ alone. histandard model hd military serial numbers best
Pistols with clear, crisp "U.S." Property marks and original Parkerized finishes carry the highest value among collectors. You can estimate the era and rarity of