I found this offered on me, ho boy this is reminiscent of that time I jumped the gun

Boy am I out of the game.. I haven't even made a guess on other suggestions in a week!

1 of 1 hat, same history for both trades http://backpack.tf/item/3376823065

3 man history, 2 trades to provide, well then this seems conclusive

http://www.tf2outpost.com/trade/25580729 Sold for a Vivid Plasma Pyromancer's Mask unknown, assuming offered, 72 * .9 = 64.8, rounding up to 65 keys

Buyer's BP Before: http://backpack.tf/profiles/76561197983545608?time=1427958000

Buyer's BP After: http://backpack.tf/profiles/76561197983545608?time=1428217200

http://www.tf2outpost.com/trade/25606946 Sold for a GE Anger, offerered 78 * .9 = 70.2, rounding down to 70 keys

Seller's BP Before: http://backpack.tf/profiles/76561197983545608?time=1430243009

Seller's BP After: http://backpack.tf/profiles/76561197983545608?time=1430982000

Both of the other involved hats have recent prices so no minis required

Feel free to offer compliments or criticism and other information necessary, thanks for reading!