Lots of sales happend. Let me show you the ones I could find.

1)

http://backpack.tf/profiles/76561198294814093#!/compare/1464998400/1465084800

Sold for 20 keys pure.

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2)

http://backpack.tf/profiles/76561198294814093#!/compare/1465084800/1465171200

Sold with 4 keys for Cool Professional Killstreak King of the Jungle Minigun (Well-Worn).

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3)

http://backpack.tf/profiles/76561198041852307#!/compare/1465171200/1465257600

Sold for 26 keys pure.

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4)

http://backpack.tf/profiles/76561198041852307#!/compare/1465257600/1465776000

http://www.tf2outpost.com/trade/28236170

Sold with sweets for Specialized Killstreak Max's Severed Head.

X ~ 39 keys (using prices for 06.12). BO was 30.

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5)

http://backpack.tf/profiles/76561198109342990#!/compare/1466899200/1466985600

Sold 1:1 with duped Haunted Ghosts Doctor's Sack.

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6)

http://backpack.tf/profiles/76561198109342990#!/compare/1470096000/1470182400

http://www.tf2outpost.com/trade/28386520

Finaly sold for 22 keys.

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7)

http://backpack.tf/profiles/76561198075415934#!/compare/1467158400/1467244800

Sold with Disco Beat Down Crown of the Old Kingdom for Molten Mallard Cotton Head.

X ~ 48 (using prices for 06.30)

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8)

http://backpack.tf/profiles/76561198089619827#!/compare/1470182400/1470268800

Bulk sale + outdated hats, unusable.

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Summary: 20, 22, 26, 30, 48.

Any criticism appreciated.