Second try on this. 6th suggestion for this hat this week, by my count. Credit for a good amount of the proof comes from Tf2Turkiye | Pumpkiin and some help from Polar as well.

http://www.tf2outpost.com/trade/19522008

Offered TW Muffs (6.7 after overpay, see http://backpack.tf/vote/id/537d26c14dd7b8ef558b4a33 )

http://www.tf2outpost.com/trade/18925812

http://backpack.tf/profiles/76561198072507984?time=1396854000

Traded for a GBH HoC (See Mini suggestion below)

--GBH Hat of Cards Mini suggestion

http://www.tf2outpost.com/trade/19064577

Offered Ghost El Jefe (6.2, Outdated)

http://www.tf2outpost.com/trade/19064577

http://backpack.tf/profiles/76561198072507984?time=1397372400

Sold for a Phosphorous Lucky Shot + ~1.2 = ~6.5

So the HoC only has one sale, at ~6.5

http://www.tf2outpost.com/trade/18767672

Sold for TW Metal Slug (5.9, Outdated)

Just here in case anyone finds another trade and wants to price this. It fits into the middle of the range as is though, so half-decent support as well.

http://www.tf2outpost.com/trade/19819338#latest

Offered a PE Tyrannus + Blizz Beak + Spec Luger = (3.2 + 2.4 + .6) = 6.2

http://www.tf2outpost.com/trade/19227143

Sold for 4.9 Buds (had a 4.5 Bud B/O though, so counts as 4.5)

http://backpack.tf/profiles/76561198035327293?time=1398927600

Sold for 4.5 Buds

Sales at 4.5, 4.5, 6.2, and 6.5. Price of the Muffs is all over the place right now, so I'm leaving that one out. At this point I forget what Pumpkiin's proof was and what it was I added, but the last 4.5 link and the exact price of the HoC <-> LC deal are both credit to polar.