Sale #1:

http://www.tf2outpost.com/trade/26016665

Sold for 7 keys + some crates

Buyer:

http://backpack.tf/profiles/76561198073537440?time=1432191600 (May 21st)

http://backpack.tf/profiles/76561198073537440?time=1432278000 (May 22nd)

Seller:

http://backpack.tf/profiles/76561198056999785?time=1432191600 (May 21st)

http://backpack.tf/profiles/76561198056999785?time=1432278000 (May 22nd)

Sale #2:

http://www.tf2outpost.com/trade/25813651

Sold for a Nuts Geisha Boy w/ polar in the history (massive outlier)

Sale #3:

Sold with 0.5 keys for Nuts Sober Stuntman (8)

http://backpack.tf/profiles/76561198004509501?time=1433401200 (June 4th)

http://backpack.tf/profiles/76561198004509501?time=1433648173 (June 7th)

Would be around equal value.

Sale #4:

Sold for Nuts Sober Stuntman (8)

http://backpack.tf/profiles/76561198073537440?time=1433055600 (May 31st)

http://backpack.tf/profiles/76561198073537440?time=1433142000 (June 1st)

Support Proof:

http://www.tf2outpost.com/trade/26133703 8 key B/O

http://www.tf2outpost.com/trade/26140660 Fresh seller for 8 keys

Nuts Sober Stuntman:

http://backpack.tf/vote/id/5573c94eba8d88ab7c8b459f