I love the offbeat and non-sports cards. I mentioned the Howard Hughes card from the 1936 Heinz Aviators set in one of the other REA threads; I was blown away by the action on that card on the final day. The Howard Hughes card in that set is a great rarity, and doesn't come up for auction too often. In 2014, a PSA 5 of the Hughes cards sold for $657 with Legendary. In 2012, a PSA 4 sold for $478 with Legendary.
The Hughes card at REA was a PSA "5" ended at $2,040 with the BP.
Yikes, non-sports cards don't often triple like that in three years, especially in mid-grade.