Sale 1:

https://backpack.tf/profiles/76561198224648164#!/compare/1528588800/1528675200

https://backpack.tf/profiles/76561198065409820#!/compare/1528588800/1528675200

Untraceable.

Sale 2:

https://backpack.tf/profiles/76561198065409820#!/compare/1528761600/1528848000

https://backpack.tf/profiles/76561198155219465#!/compare/1528761600/1528848000

Sold with 18 keys for G Fetti Boonie + Misty OMA(78)

Boonie Mini:

https://backpack.tf/suggestion/5b2d16cdcf6c7513d43e64ee

Suggestion for 15 keys.

Total is (78 + 15) - 18 = 75 keys

Sale 3:

https://backpack.tf/profiles/76561198450870449#!/compare/1525132800/1525219200

https://backpack.tf/profiles/76561198258264645#!/compare/1525132800/1525219200

Invalid sale, Scattergun sold for keys, keys were possibly used on Western, Scammer trade.

Sale 4:

https://backpack.tf/profiles/76561198258264645#!/compare/1526083200/1526169600

https://backpack.tf/profiles/76561198346664888#!/compare/1526083200/1526169600

Untraceable.

Sale 5:

https://backpack.tf/profiles/76561198346664888#!/compare/1526169600/1526256000

https://backpack.tf/profiles/76561198148495750#!/compare/1526169600/1526256000

Sold for Smoking Bonk Boy + HG Samur-Eye

Bonk Mini:

https://backpack.tf/suggestion/5b1af57f44325a08c91c53c9

Suggestion for 30 keys

Samur-Eye Mini:

https://backpack.tf/suggestion/5b2d1895cf6c75157b747991

Suggestion for 42 keys

Total is 72 keys.

http://www.tf2outpost.com/trade/29651890

B/O of 85 keys.

Sale 6:

https://backpack.tf/profiles/76561198148495750#!/compare/1526428800/1526688000

https://backpack.tf/profiles/76561198301244249#!/compare/1526601600/1526688000

Sold for 16 keys + 10.33 ref

Sale 7:

https://backpack.tf/profiles/76561198301244249#!/compare/1527292800/1527379200

https://backpack.tf/profiles/76561198051472163#!/compare/1527379200/1527897600

Sold for Strange Beams Fly Guy

Better used there.

Total sales @:

72, 75

Taking 72 - 75 keys.