Previous suggestion: https://backpack.tf/suggestion/598a3ef5cf6c751e814feff3

https://backpack.tf/profiles/76561198262878443#!/compare/1501891200/1502064000

11 keys 12 ref pure

https://backpack.tf/profiles/76561198148760840#!/compare/1501804800/1502150400

PayPal/CSGO

https://backpack.tf/profiles/76561198101899047#!/compare/1500336000/1500508800

Sold with a key in sweets for a Steaming Connoisseur's Cap(12 keys, open suggestion). Taking 11.

https://backpack.tf/profiles/76561198043847267#!/compare/1501027200/1501200000

9 keys 22 ref. Quicksell.

https://backpack.tf/profiles/76561198051900362#!/compare/1501113600/1501200000

10.5 keys

https://backpack.tf/profiles/76561198145127094#!/compare/1501804800/1501891200

10 keys. Quicksell.

https://backpack.tf/profiles/76561198145127094#!/compare/1501632000/1501718400

Sold with three keys for an Aces High Soldier's Slope Scopers(16 keys, indate). Taking 13.

We have sales at: 11.4, 11, 9.7, 10.5, 10, and 12.

Quickbuyers counter sales at 9.7 and 10.

That leaves us with 11-13.