Took a few days to gather more proof and such since my last suggestion. Here's what I got

Suicidal helicopter pilots isn't a good thing to promote.

And so is the flat rate of 1.66 ref

Not sure about the classifieds, but more have begun to fit in the range over the past few days

http://backpack.tf/classifieds?item=Whirly Warrior&quality=6&tradable=1&craftable=1&page=1

Solds:

http://www.tf2outpost.com/trade/23577367 - 1.33 ref

http://www.tf2outpost.com/trade/23545807 - 1.33 ref

http://www.tf2outpost.com/trade/23533460 - 1.44 ref

http://www.tf2outpost.com/trade/23540630 - 1.66 ref

http://www.tf2outpost.com/trade/23553573 - 1.66 ref

http://www.tf2outpost.com/trade/23594891 - 1.66 ref

http://prntscr.com/53hf6i - 1.66

Recent listings:

http://www.tf2outpost.com/trade/23601397 - 1.33 ref

http://www.tf2outpost.com/trade/23603296 - 1.33 ref

http://www.tf2outpost.com/trade/23562204 - 1.33 ref

http://www.tf2outpost.com/trade/23606003 - 1.44 ref

http://bazaar.tf/trade/439648 - 1.44 ref

http://www.tf2outpost.com/trade/23612894 - 1.44 ref

http://www.tf2outpost.com/trade/23598145 - 1.55 ref

http://www.tf2outpost.com/trade/23452938 - 1.55 ref

http://www.tf2outpost.com/trade/23596446 - 1.55 ref

http://www.tf2outpost.com/trade/23492530 - 1.55 ref

http://www.tf2outpost.com/trade/23592482 - 1.66 ref

http://www.tf2outpost.com/trade/23577568 - 1.66 ref

http://www.tf2outpost.com/trade/23593891 -1.66 ref

My trade

http://www.tf2outpost.com/trade/23565661 - 1.66 ref

Again,it isn't easy to get solds period because most are from backpack.tf

Before you question this, consider how easy it is to get this hat below 1.66 ref.

Did I miss anything? Does it seem like my proof came from mars? Counter-proof me.