Post 2009 Coins.

Tough question.

Usually these things aren't known for several years now days.

I usually try to save every nice coin I can gewt cheap and then just spend them if they have no premium after several years. Before spending them I go through and set aside a few of the nicest ones.

The ATB Quarters up through 2012 (?) were all low mintage--many even less plentiful than the rarest of territory quarters. AU/BU examples may be in demand the future if people actually want to collect the series, but the mintages would prevent any particular coin from being too valuable. Acadia-D is the current key, at 21 million. That's still a pretty substantial figure, so I don't think even that coin will be worth 2x face value for a long, long time.

As for the rest of the coins, nothing worth keeping out of the circulating denominations as far as I am aware, except for the usual very minor die varieties.