Classics in Pink, Black, Classic, Camel and Rose

When teaching collective nouns to a class today, I mentioned some of the strange ones – an ostentation of peacocks, a murder of crows, a parliament of owls, a knot of frogs and a skulk of foxes.

That made me wonder what the collective noun for a group of binders would be. What do you think the collective noun for Classics would be? They are sleek, understated, silky smooth.