I think oneounceload has it spot on.
I have an older 24 that I inherited (.22/.410). I don't shoot it much, but I like (quite a bit, actually) and respect it.
The guns have a storied and interesting history, at least model-wise.
They made them up until not too long ago (< 10 years, I believe). I remember seeing them in the online catalog at one point. So now that they're gone, that kind of kicks the desirability up a notch I guess - especially to collectors.
I used to want a .22/20 gauge, but not so much now. I think a .357, .30-30 or .223 over 12 gauge might be cool for an emergency camp gun that virtually anyone could use safely. .22 Hornet over 20 gauge might be neat too; maybe in a varminter role.
In researching a bit before answering, I discovered my gun was made in '66 instead of '69 or '70 like I thought. I'm grateful to find that out.