Sale 1:

Sold for 11 keys + negligible metal

https://backpack.tf/profiles/76561199112522018#!/compare/1708992000/1709078400

https://backpack.tf/profiles/76561199145548798#!/compare/1704412800/1709164800

https://backpack.tf/item/5243457756

= 11 keys

Sale 2:

Sold for 10 keys

https://backpack.tf/profiles/76561198261483133#!/compare/1713052800/1713139200 - Near ID: 14372856142

https://backpack.tf/profiles/76561198165448636#!/compare/1712966400/1713225600

https://backpack.tf/item/9501762824

= 10 keys

Sale 3:

Sold for 10 keys

https://backpack.tf/profiles/76561199084784906#!/compare/1715472000/1715558400

https://backpack.tf/profiles/76561198093425941#!/compare/1715472000/1715558400

https://backpack.tf/item/5445346691

= 10 keys

Sale 4:

Sold for 8 keys + Showstopper Profane Puppeteer (Suggestion at 2.2)

https://backpack.tf/profiles/76561199043177646#!/compare/1715040000/1715126400

https://backpack.tf/profiles/76561198341532573#!/compare/1715040000/1715126400

https://backpack.tf/item/8401191492

https://imgur.com/a/Z3DGC5Y - B/O of ~10.3

= 10 keys

Showstopper Profane Puppeteer:

https://backpack.tf/suggestion/6650810fed1dd81f930c93ad

Other Sales:

#1

https://backpack.tf/profiles/76561198044845927#!/compare/1712793600/1712880000

https://backpack.tf/profiles/76561198113190503#!/compare/1712793600/1712880000

https://backpack.tf/item/14320981278

Bulk

#2

https://backpack.tf/profiles/76561199026390261#!/compare/1715904000/1715990400

https://backpack.tf/profiles/76561199069442401#!/compare/1715385600/1716076800

https://backpack.tf/item/12060497806

Untraceable

#3

https://backpack.tf/profiles/76561198373779833#!/compare/1709078400/1710028800

https://backpack.tf/profiles/76561199641943540#!/compare/1711238400/1714003200 - no prior compare

https://backpack.tf/item/9501762824

Untraceable

#4

https://backpack.tf/profiles/76561199641943540#!/compare/1711238400/1714003200

https://backpack.tf/profiles/76561198261483133#!/compare/1711152000/1711238400

https://backpack.tf/item/9501762824

Bulk

#5

https://backpack.tf/profiles/76561199622154005#!/compare/1716336000/1716422400

https://backpack.tf/profiles/76561198050518375#!/compare/1716336000/1716422400

https://backpack.tf/item/8988978342

Probably gambled

#6

https://backpack.tf/profiles/76561199106709502#!/compare/1684108800/1711152000

https://backpack.tf/profiles/76561199522145204#!/compare/1711152000/1711411200

https://backpack.tf/item/6349922968

Untraceable, probably bulk

#7

https://backpack.tf/profiles/76561199522145204#!/compare/1711670400/1711756800

https://backpack.tf/profiles/76561198311498888#!/compare/1711584000/1711670400

https://backpack.tf/item/6349922968

Untraceable

#8

https://backpack.tf/profiles/76561198311498888#!/compare/1711756800/1711843200

https://backpack.tf/profiles/76561198410895389#!/compare/1710633600/1711843200

https://backpack.tf/item/6349922968

Bulk/untraceable

#9

https://backpack.tf/profiles/76561198410895389#!/compare/1711843200/1712102400

https://backpack.tf/profiles/76561198317639126#!/compare/1708300800/1712275200

https://backpack.tf/item/6349922968

A bunch of cheap cosmetics match

#10

https://backpack.tf/profiles/76561199163273530#!/compare/1709510400/1710115200

https://backpack.tf/profiles/76561198340077514#!/compare/1709337600/1709942400

https://backpack.tf/item/5268853340

Untraceable

#11

https://backpack.tf/profiles/76561198340077514#!/compare/1710115200/1712448000

https://backpack.tf/profiles/76561198938363889#!/compare/1714348800/1714348800 - no prior compare

https://backpack.tf/item/5268853340

Untraceable

https://backpack.tf/item/13888176743 - unusualified

https://backpack.tf/item/12323508408 - unusualified

https://backpack.tf/item/11782188170 - unusualified

https://backpack.tf/item/8365012930 - marketplace

Sellers:

https://imgur.com/a/u5bbiDX

https://backpack.tf/item/5185766688 - 11 keys

https://backpack.tf/item/14320981278 - 11 keys

https://backpack.tf/item/6036905413 - 14 keys

https://backpack.tf/item/7426845671 - 19 keys

https://backpack.tf/item/6375987586 - 19 keys

https://backpack.tf/item/5997153156 - marketplace

https://backpack.tf/item/12060497806 - marketplace

https://backpack.tf/item/14178349093 - marketplace

https://backpack.tf/item/10780961142 - marketplace

https://backpack.tf/item/8365012930 - marketplace

https://backpack.tf/item/6291264140 - marketplace

Sales at:

10 (3x)

11

Taking 10-11 keys.