In the first place, I think you have to be a little neurotic to CRH at all (hey, I do it too, so I can say it!). 
That said, I don't think there's anything wrong with keeping the better examples of the zincs if you have the storage. It's not like you're tying up vast sums of cash in it. And, as has been said before, the zincs will deteriorate more quickly than coppers so in (a long, long) time, your shiny ones could be worth something if you keep them that way.
After searching a box I usually end up with a stack like your picture, but after comparing for upgrades in my albums, I dump them all.
That said, I don't think there's anything wrong with keeping the better examples of the zincs if you have the storage. It's not like you're tying up vast sums of cash in it. And, as has been said before, the zincs will deteriorate more quickly than coppers so in (a long, long) time, your shiny ones could be worth something if you keep them that way.
After searching a box I usually end up with a stack like your picture, but after comparing for upgrades in my albums, I dump them all.





















