I like Sherlock

Sleuth music plays

Sellers: - https://gyazo.com/0e9c598d9987522eb5f7affff6905716

https://backpack.tf/item/3341457270 - young @ 100 keys

https://backpack.tf/item/9332289857 - 2 months @ 110 keys

Sale 1)

https://backpack.tf/profiles/76561198256279519#!/compare/1616889600/1616976000

https://backpack.tf/profiles/76561198115841780#!/compare/1616889600/1616976000 - Using there

Sale 2)

https://backpack.tf/profiles/76561198889987634#!/compare/1616544000/1616630400

https://backpack.tf/profiles/76561198256279519#!/compare/1616371200/1616544000 - Sold with a Spelled Festive Pro KS Revolver (20) + a Strange Festivized Professional Killstreak Bazaar Bargain (~9.7 at the time) + ~1.5 keys in sweets for a Death at Dusk Flipped Trilby (108) = 77 keys, once rounded

Buyout was 100 keys https://gladiator.tf/listings/605a4661e8e148fbe93f5bb6

Mini for Revolver:

https://backpack.tf/profiles/76561198256279519#!/compare/1616630400/1616716800 - Sold for 20 keys

Sale 3)

https://backpack.tf/profiles/76561199102451836#!/compare/1615075200/1615161600

https://backpack.tf/profiles/76561198889987634#!/compare/1615075200/1615161600 - Sold for 80 keys

Sale 4)

https://backpack.tf/profiles/76561198072441047#!/compare/1613692800/1614038400

https://backpack.tf/profiles/76561199102451836#!/compare/1613865600/1614038400 - Sold via buy order for ~64 keys

Sale 5)

https://backpack.tf/profiles/76561198061489334#!/compare/1613260800/1613347200

https://backpack.tf/profiles/76561198072441047#!/compare/1613347200/1613433600 - Sold for 51 keys, seems incomplete

Note: - https://backpack.tf/item/206845617 - Excluding tradeback and tradeit.gg transfer

Sale 6)

https://backpack.tf/profiles/76561198850121720#!/compare/1611360000/1611446400

https://backpack.tf/profiles/76561199117812013#!/compare/1611360000/1611446400 - Untrace

Sale 7) Credits to K1ng

https://backpack.tf/profiles/76561198115841780#!/compare/1616976000/1617148800

https://backpack.tf/profiles/76561198158206236#!/compare/1617062400/1617148800 - Sold with 4 keys for a Haunted Ghosts Killer Exclusive (92) = 88 keys

Buyout was 108 keys https://gladiator.tf/listings/6063c59429d868417be79296

Sale 8)

https://backpack.tf/profiles/76561198158206236#!/compare/1618272000/1618358400

https://backpack.tf/profiles/76561198090787803#!/compare/1618012800/1618358400 - Sold for 80 keys

Sale 9)

https://backpack.tf/profiles/76561198232041512#!/compare/1620172800/1620259200

https://backpack.tf/profiles/76561198063286445#!/compare/1620172800/1620259200 - Sold for 90 keys

Duped sales:

Sale 10)

https://backpack.tf/profiles/76561198850121720#!/compare/1612051200/1612137600 - Untrace

Sale 11)

https://backpack.tf/item/306668615 https://marketplace.tf/items/tf2/319;5;u13

$179.99 / $2.19 = 82 keys

Sale 12)

https://backpack.tf/profiles/76561199108620678#!/compare/1612051200/1612483200 - Untrace

Sale 13)

https://backpack.tf/profiles/76561198850274253#!/compare/1610064000/1610150400

https://backpack.tf/profiles/76561199108620678#!/compare/1610150400/1610409600 - Sold for 69 keys

Sales:

77, 80, 80, 88 and 90

The 82 key duped sale fits the range here

Thanks =)