https://backpack.tf/item/15827892534

Untrace

https://backpack.tf/profiles/76561198848583097#!/compare/1747180800/1750291200

https://backpack.tf/profiles/76561199062368819#!/compare/1746144000/1753056000

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https://backpack.tf/item/15096983641

Probably 45 Keys

https://backpack.tf/profiles/76561198396499936#!/compare/1754784000/1754956800

https://backpack.tf/profiles/76561198070523500#!/compare/1737072000/1757376000

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https://backpack.tf/item/15603172445

Sold for 49 Keys (histories match on at least a few of the keys in the 49 cluster, some weren't scanned since keys were bought day of)

https://backpack.tf/item/15808214503 (key sample)

https://backpack.tf/profiles/76561198069143099#!/compare/1752364800/1752451200

https://backpack.tf/profiles/76561198039843013#!/compare/1752364800/1752451200

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Sold for $99.99 on Jul 21 (~50 keys with Keys @ $2.01):

https://marketplace.tf/items/tf2/31476;5;u362

https://marketplace.tf/items/tf2/5021;6

history unknown

45,49,50 -> 45-50