Sale 1:

https://backpack.tf/profiles/76561198254236972#!/compare/1553904000/1554163200

https://backpack.tf/profiles/76561197964171516#!/compare/1554076800/1554163200

Sold for 44 keys

The histories on the keys don't match in this link:

https://backpack.tf/profiles/76561197964171516#!/compare/1554076800/1554163200

But if you look at the histories of the keys in the 15 key batch on this link:

https://backpack.tf/profiles/76561198254236972#!/compare/1553904000/1554163200

https://backpack.tf/item/5170000285

https://backpack.tf/item/7068255204

https://backpack.tf/item/6927160825

The keys were bought from this person and then 44 of them went to the Scattergun right after. Explains the lack of a person in-between because it transferred so fast.

Sale 2:

https://backpack.tf/profiles/76561197964171516#!/compare/1550102400/1550275200

https://backpack.tf/profiles/76561198370768936#!/compare/1550275200/1550361600

Sold for Sunbeams Ye Oiled Baker Boy, which has an open suggestion for ~33 keys

https://backpack.tf/suggestion/5c9a4be76780725da64842e6

Sale 3:

https://steamcommunity.com/market/listings/440/Unusual%20Professional%20Killstreak%20Clover%20Camo%27d%20Scattergun%20%28Minimal%20Wear%29

https://backpack.tf/profiles/76561198425714292#!/compare/1547337600/1547510400

Went here from SCM - January 14 for $52.67 / 2.35 = 22 keys

https://backpack.tf/classifieds?item=Clover%20Camo%27d%20|%20Scattergun%20(Minimal%20Wear)&quality=15&tradable=1&craftable=1&australium=-1&particle=701&killstreak_tier=0

https://gyazo.com/e56c2d9d3fcbf63d410976fceb123109

Quickbuyers buying any Hot Scattergun for 22 keys.

Excluding this sale.

Besides, it looks like it resold back on SCM right after:

Sale 4:

https://steamcommunity.com/market/listings/440/Unusual%20Professional%20Killstreak%20Clover%20Camo%27d%20Scattergun%20%28Minimal%20Wear%29

https://backpack.tf/profiles/76561198370768936#!/compare/1547769600/1548028800

Went here from SCM on January 19 sold for $88.12 / 2.33 = 39 keys

Sales: 33, 39, 44