Price for anything is always going to be determined by supply and demand...... I would love to own a nice model 21, but don't because I personally don't think it's worth to me, the premium you pay over a nice NID, Fox, or LC Smith. So, I own a couple of NID's, a Fox and a Smith... :-) And, feel blessed to be able to own those. There is something extremely special in carrying afield a gun that is 50-100 years old, and was previously owned and hunted with by members of "The Greatest Generation".

But a gun will always be "worth" what someone else is willing to pay for it.

My son recently graduated from Navy A School, and I gave him a 1947 mint condition LeFever Nitro in 16ga for grad present, hoping to pass along to him my love for old guns.....