https://backpack.tf/item/9140833017

Untraceable:

https://backpack.tf/profiles/76561198095279958#!/compare/1600992000/1602028800

https://backpack.tf/profiles/76561198084126218#!/compare/1601942400/1602028800

https://backpack.tf/item/9150128431

https://marketplace.tf/items/tf2/31106;5;u147;strange

October 30: $180/1.84=97.83 ~98 keys

no buyout

https://backpack.tf/item/9266698829

Untraceable:

https://backpack.tf/profiles/76561198142994553#!/compare/1601337600/1601424000

https://backpack.tf/profiles/76561198000889832#!/compare/1601337600/1601424000

deposited and withdrawn by same user from marketplace.tf

140 keys:

https://backpack.tf/profiles/76561198000889832#!/compare/1604361600/1604793600

https://backpack.tf/profiles/76561198969552371#!/compare/1604620800/1604707200

https://steamuserimages-a.akamaihd.net/ugc/1646593864309174714/F2C781E5094D4912E5A6681A007391EB7006031C/

https://backpack.tf/item/9279247374

Untraceable:

https://backpack.tf/profiles/76561198011507712#!/compare/1601337600/1601424000

https://backpack.tf/profiles/76561198063054044#!/compare/1601424000/1601510400

Untraceable:

https://backpack.tf/profiles/76561198063054044#!/compare/1601942400/1602201600

https://backpack.tf/profiles/76561198170349530#!/compare/1600300800/1602201600

Other Marketplace.tf sales which are untraceable: https://marketplace.tf/items/tf2/31106;5;u147;strange

September 29: $190/1.85=102.7 ~103 keys

October 2: $350/1.85=189.19 ~189 keys

We have 98, 103, 140 and 189

There has been a seller at 150 keys who didn't successfully sell theirs so 189 looks like a high outlier

https://bot.tf/stats/listings/MV6Q86JW https://backpack.tf/item/9140833017

Going 98-140, gonna round to 100-140 for neatness