https://backpack.tf/profiles/76561198801624527#!/compare/1516233600/1516320000

Sold for 6 keys pure.

https://backpack.tf/profiles/76561198448575693#!/compare/1517529600/1517616000

Sold for 7 keys pure.

https://backpack.tf/profiles/76561198068513116#!/compare/1516320000/1516406400

2:1 sale

https://backpack.tf/profiles/76561198049597007#!/compare/1514246400/1516406400

None found

https://backpack.tf/profiles/76561198273700921#!/compare/1516579200/1516665600

https://backpack.tf/profiles/76561197999059147#!/compare/1516579200/1516665600

Sold for a duped KaW Ol’ Snaggletooth (11, not including this one.) + 2 keys pure.

He went on to sell the Ol’ Snaggle for 8 keys 4 ref, excluding this one due to being too high and being duped.

https://backpack.tf/profiles/76561197999059147#!/compare/1517184000/1517270400

Sold for a Neutron Star Electric Escorter (13, outdated, better used there) but 5 keys were added on the Trackman’s side. = 8 keys

https://backpack.tf/profiles/76561198159376239#!/compare/1517270400/1517356800

https://backpack.tf/profiles/76561198012591243#!/compare/1517270400/1517356800

???

https://backpack.tf/profiles/76561198159376239#!/compare/1517616000/1517702400

https://backpack.tf/profiles/76561198212093744#!/compare/1515974400/1517788800

???

Sales:

6

7

Price:

6-7

New sale:

https://backpack.tf/profiles/76561198117658644#!/compare/1519689600/1519776000

7 keys

I checked all the other histories and didn't find anything usefull. Untraceable and such.