"A Thérèse"

http://www.tf2outpost.com/trade/26906458

Sold for Miami Luchadore (~20 Keys) + TW Elfin (18 Keys) + Frostbite Broadband (~23 Keys) ~61 Keys

http://backpack.tf/profiles/76561198069495263?time=1441090800

http://backpack.tf/profiles/76561198069495263?time=1441350000

http://www.tf2outpost.com/trade/26898536

Sold for DP Antlers (52 Keys) w/ S. Spec. KS Hunstman (4 Keys) ~48 Keys

http://backpack.tf/profiles/76561198069495263?time=1440658800

http://backpack.tf/profiles/76561198069495263?time=1441004400

I'm assuming that it's offered, doing overpay or not is your choice but this is most likely an outlier.

Sold for Miami Boxcar Bomber ~70 Keys?

http://backpack.tf/profiles/76561197996016130?time=1440745200

http://backpack.tf/profiles/76561197996016130?time=1440831600

http://www.tf2outpost.com/trade/26388468

Sold for DP Scotsman (~20 Keys) + Blizzardy Trilby (18 Keys) + Stormy Toque (~15 Keys) + KaW Teutonic (~20 Keys) ~73 Keys

http://backpack.tf/profiles/76561197996016130?time=1439794800

http://backpack.tf/profiles/76561197996016130?time=1439967600

Sold for Gifted P. Fetti Inspecteur (~14 Keys) + Aces Kabuto (16 Keys) + Miami Panama (14 Keys) + Pro. KS Machina (~17 Keys) + SF Huntsman (5 Keys) + 13 Keys ~79 Keys

http://backpack.tf/profiles/76561198120324862?time=1435993200

http://backpack.tf/profiles/76561198120324862?time=1436079600

Sold for Blizzardy War Pig ~80 Keys

http://backpack.tf/profiles/76561198037248506?time=1443510000

http://backpack.tf/profiles/76561198037248506?time=1443682800

Blizzardy War Pig: 80 Keys

http://www.tf2outpost.com/trade/27146984 - 80 Keys - Young

Sales at 48, 61, 73, 79, 80 Keys.

Using 73-80 Keys as they are close to each other.

Re-suggesting from: http://backpack.tf/vote/id/55d8261ab98d88ed498b45fe