Bubbly Billy

https://backpack.tf/item/635136603

Sale 1) Sold for 11 Keys

https://backpack.tf/profiles/76561198202135278#!/compare/1546128000/1546214400

Sale 2) Bulk sale for a Searing Plasma Punk's Pomp

https://backpack.tf/profiles/76561198397722019#!/compare/1547164800/1547251200

https://backpack.tf/item/461774000

Sale 3) SCM sale for ?

https://backpack.tf/profiles/76561198202347600#!/compare/1545350400/1545696000

https://backpack.tf/profiles/76561198215993605#!/compare/1547078400/1547164800

https://backpack.tf/item/5636098201

Sale 4) Sold for a Strange Killstreak Ambassador?

https://backpack.tf/profiles/76561198145941221#!/compare/1545782400/1545955200

https://backpack.tf/profiles/76561198352746399#!/compare/1545868800/1545955200

Sale 5) Sold to a buy order for 9 Keys

https://backpack.tf/profiles/76561198275530188#!/compare/1546387200/1546473600

Sale 6) Looks like it sold for an Orbiting Planets Buccaneer's Bicorne + 35 Refined?

https://backpack.tf/profiles/76561198048851745#!/compare/1546905600/1546992000

Can't say for certain. Excluding. If so, this sale still fits in the range because of the Sellers at 9 Keys -> https://imgur.com/a/7dNoLNK

Sale 7) Sold + ~2 Keys of Items for 12 Keys

https://backpack.tf/profiles/76561198257609313#!/compare/1547251200/1547337600

12 - 2 = 10 Keys

Sale 8) Bulk sale

https://backpack.tf/profiles/76561198085880346#!/compare/1547510400/1547942400