Very nice. For me they'd be keepers. All my junk silver coins are keepers as I don't have enough to bother selling.
I believe they are. Quite nice finds from a junk silver search. I think they are worthy of being interred in their very own flips.
It depends on your collecting style and goals. I keep one of every date and mm, then upgrade as I find better ones. Doesn't matter what denom, country, or metal. I want one of everything. After I have one then the extras go into the stacking pile until I give it away or trade/sell it.
