I like slabbing beautiful and unusual coins even if I feel that there is no market for them at the present. In that respect, I'd say yes. You can likely buy these on
ebay for $15 or so dollars when they come around- but in the future many of them will be ruined or so deeply toned as to be unattractive. I like your piece- and I am sending my 1961 proof nickel in later this month- it's probably a PR-66 or PR-67 (like yours)...