Just sold this 1/1 for 70 pure, buyer has said they have no plans to resell. The indexed buyer was acting as a go-between on behalf of a friend with a private backpack, and the hat is likely not going to be indexed in the near future.

Fairly sure I've never listed this thing for less than 75. Looking back through old trades, the last time I even put it up on outpost was apparently last fall: http://www.tf2outpost.com/trade/26999553#latest

The hat:

http://backpack.tf/item/3155073497

Unnecessarily thorough documentation of the trade:

Backpack history:

http://backpack.tf/profiles/76561198056080374#!/compare/1480636800/1480723200

(screenshot of backpack history if it starts to get messy tomorrow)

http://i.imgur.com/wuBrCP3.png

(screenshot of trade in browser)

http://i.imgur.com/7zmalY1.png

Not sure what's up with the item stats, which briefly show 2, but also cut off about a year and a half early (compare to hat history, it's about 2 years old), but as far as I can tell this is the only one that's ever been on the market.