Needs a drop.

http://www.tf2outpost.com/trade/18800786 - 1.7 keys (10 days)

http://www.tf2outpost.com/trade/18316942 - 1.8 keys (1 month) (Poor bump, but there is only one page on outpost)

http://www.tf2outpost.com/trade/18979692 - 2 keys (1 day)

http://www.tf2outpost.com/trade/18968698 - 2 keys (2 days)

http://www.tf2outpost.com/trade/18945956 - 2 keys (3 days)

http://www.tf2outpost.com/trade/18524816 - 2 keys (3 weeks)

http://www.tf2outpost.com/trade/18520328 - 2 keys (3 weeks)

http://www.tf2outpost.com/trade/17521193 - 2 keys (2 months) Apparently sold one for 2 keys April 4th, has one left.

http://www.tf2outpost.com/trade/18920213 - 2 keys (4 days)

----------------------------------------------------------------------------------------------------------------------------

http://backpack.tf/classifieds/search/id/52cd53454dd7b818158b4567:

1 @ 1.7 keys (4 days)

1 @ 1.8 keys (<1 day)

1 @ 1.9 keys (<1 day)

2 @ 2 keys (1 at 7 days, 1 at ~1 day)