I think you are right, the Challengers are very cool guns and both held gas. May be a new area to collect? All of a sudden I now have three Tell 3’s, that seems nuts but I guess it matches my 3 Haenel 28-R? Lol. The extra Tell 2 will go eventually. Got two people that want the Scout.
I think the Tells and Haenel’s will hold their value, more fun than money in a bank account.