Some of those guns are quite special. Roger Bain Esq had a wonderful piece engraved in Germany for some Washington "Big Bwana", no doubt. The deep relief engraving was vastly superior to most vintage Winchester stuff. It looked like work of maestri Werner Hofmann. I couldn't collect 50K in change to get that one.
PS. Check out Larry Brown's 'How Good is the Model 21?' on SSBBS. With > 150 responses, I suspect full broadsides are being exchanged between wealthy ones who have a few vs. some who can't afford one, or choose not to buy one. Basically 21 12br is a nice light 8br you many not be able to carry all day.