Item 1: https://backpack.tf/item/16913646966

Sale 1:

https://backpack.tf/profiles/76561198045892076#!/compare/1776988800/1777161600

https://backpack.tf/profiles/76561199034587732#!/compare/1776816000/1777161600

39 ref matches

Sale 2:

Mannco.Store, excluding

Item 2: https://backpack.tf/item/15799638557

Sale 3:

https://backpack.tf/profiles/76561199697394581#!/compare/1778457600/1778544000

https://backpack.tf/profiles/76561198176472371#!/compare/1778457600/1780012800

Untrace

Item 3: https://backpack.tf/item/14030232036

Sale 4:

https://backpack.tf/profiles/76561198882175555#!/compare/1776384000/1776470400

https://backpack.tf/profiles/76561198032176942#!/compare/1776384000/1776470400

15 keys

Sale 5:

Marketplace.tf, covering at the end but both sales there round to 14

Sale 6:

https://backpack.tf/profiles/76561198992371500#!/compare/1777593600/1777680000

https://backpack.tf/profiles/76561198096151976#!/compare/1777334400/1777680000

Untrace

Sale 7:

https://backpack.tf/profiles/76561198096151976#!/compare/1778025600/1778112000

https://backpack.tf/profiles/76561199235704407#!/compare/1778025600/1778112000

Dumped to a bot, 12 keys match in the buyer's compare

Sale 8:

https://backpack.tf/profiles/76561199235704407#!/compare/1778889600/1779062400

https://backpack.tf/profiles/76561199183171982#!/compare/1778889600/1778976000

Account transfer then listed on MPTF

Item 4: https://backpack.tf/item/11222130780

Sale 9:

https://backpack.tf/profiles/76561199192467297#!/compare/1779494400/1780012800

https://backpack.tf/profiles/76561198349848918#!/compare/1779926400/1780012800

Dumped to a bot for ~14 keys

Item 5: https://backpack.tf/item/10646448483

Sale 10:

https://backpack.tf/profiles/76561199059632349#!/compare/1775865600/1775952000

https://backpack.tf/profiles/76561198784298520#!/compare/1775779200/1775952000

Untrace, the paint was changed so that's possibly why nothing matches

Sale 11:

https://backpack.tf/profiles/76561198784298520#!/compare/1780531200/1780790400

https://backpack.tf/profiles/76561197984425593#!/compare/1779494400/1780704000

Bulk

Item 6: https://backpack.tf/item/9255969589

Sale 12:

https://backpack.tf/profiles/76561198859721638#!/compare/1779408000/1779494400

https://backpack.tf/profiles/76561199027925524#!/compare/1776470400/1779494400

The histories for the 15 keys match, near IDs don't work since the paint was changed

Item 7: https://backpack.tf/item/9187196661

Sale 13:

https://backpack.tf/profiles/76561198045466865#!/compare/1781136000/1781222400

https://backpack.tf/profiles/76561199064615894#!/compare/1781136000/1781222400

Untrace

Sale 14:

https://backpack.tf/profiles/76561199064615894#!/compare/1781308800/1781395200

https://backpack.tf/profiles/76561199050174055#!/compare/1781308800/1781395200

Most likely gambling

Sale 15:

https://backpack.tf/profiles/76561199050174055#!/compare/1781308800/1781395200

https://backpack.tf/profiles/76561199353597579#!/compare/1781395200/1781481600

Bulk/gambling

Item 8: https://backpack.tf/item/9138000204

Listed on Mannco.Store

MPTF: https://marketplace.tf/items/tf2/31114;5;u155

Item 9: https://backpack.tf/item/9146985036 (and item 3 above)

Sale 16:

Sold for $27 on April 29 2026

Keys were $1.97

27/1.97=13.7 ~14 keys

Sale 17:

Sold for $27 on April 30 2026

keys were $2

27/2=13.5 ~24 keys

Sales:

12, 14 (x3), 15 (x2)

Sellers:

BPTF - https://imgur.com/6brfTuz 2 at 20 keys

MPTF - https://marketplace.tf/items/tf2/31114;5;u155 $39.99 (~22 keys)

STN - https://stntrading.eu/item/tf2/Unusual+Kaleidoscope+Head+of+Defense none

SCM - https://steamcommunity.com/market/listings/440/Unusual%20Head%20of%20Defense?appid=440&q=Kaleidoscope&detail=497227393159402397 https://imgur.com/8S1hVYx 46€ (~23 keys)

12 was a bot dump and is further apart from the other sales, going with 14-15 keys

typo correction: sale 17 was 14 keys, not 24 (won't change anything in the range regardless)