The links contain now to 6 day old proofs compiled from my previous suggestion

Selling for 1 key and lower

http://www.tf2outpost.com/trade/20324652 - 8 refined

http://www.tf2outpost.com/trade/20376993

http://www.tf2outpost.com/trade/20316563

http://www.tf2outpost.com/trade/20209124

Sold for 1 key

http://www.tf2outpost.com/trade/20136723

http://www.tf2outpost.com/trade/20094497

Selling for 1.1 keys

http://www.tf2outpost.com/trade/20369196

http://www.tf2outpost.com/trade/20369541

http://www.tf2outpost.com/trade/20486669

http://www.tf2outpost.com/trade/20438166

http://www.tf2outpost.com/trade/20527895 - Selling for 1.1 keys

http://www.tf2outpost.com/trade/20486669 - Selling for 1.1 keys

http://www.tf2outpost.com/trade/20510090 - Selling for 1.1 keys

http://www.tf2outpost.com/trade/20401050 - Selling for 1.15 keys (2 days, auto-bump)

http://www.tf2outpost.com/trade/20022245 - Sold painted for 1.1 keys

http://www.tf2outpost.com/trade/20258149 - (6 days)

Unsold for 1.2 keys

http://www.tf2outpost.com/trade/20324620 - (2 days)

http://www.tf2outpost.com/trade/20297620 - (4 days)

http://www.tf2outpost.com/trade/20288871 - (4 days)

http://www.tf2outpost.com/trade/20244936 - (1 week)

http://www.tf2outpost.com/trade/20179835 - (11 days)

http://www.tf2outpost.com/trade/20452017 - Lime painted

http://www.tf2outpost.com/trade/20289124

http://www.tf2outpost.com/trade/20409460

http://www.tf2outpost.com/trade/20525255

http://www.tf2outpost.com/trade/19955279

http://www.tf2outpost.com/trade/20317882

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Previous suggestion: http://backpack.tf/vote/id/539ede424dd7b8e2358b4b5c