https://backpack.tf/profiles/76561198081746597#!/compare/1569542400/1569628800

https://backpack.tf/profiles/76561198850003204#!/compare/1569369600/1569628800

30 keys + 2 taunts

The two taunts were quicksold the same day (shown in the second compare link) for 4 keys + ~1 key in refined.

This sale is 35 keys.

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https://backpack.tf/profiles/76561198850003204#!/compare/1569196800/1569283200

https://backpack.tf/profiles/76561198102408125#!/compare/1569196800/1569283200

Untraceable, looks like it went with the Vivid Punk's Pomp for keys.

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https://backpack.tf/profiles/76561198306288794#!/compare/1568851200/1568937600

https://backpack.tf/profiles/76561198102408125#!/compare/1568678400/1568937600

30 keys

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https://backpack.tf/profiles/76561198306288794#!/compare/1567641600/1567728000

https://backpack.tf/profiles/76561198237252750#!/compare/1565136000/1567641600

Bulk quicksell for keys

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https://backpack.tf/profiles/76561198237252750#!/compare/1567641600/1567728000

https://backpack.tf/profiles/76561198973923449#!/compare/1566345600/1567641600

Looks like another bulk quicksell or an account transfer.