Resugg

Sale 1:

https://backpack.tf/profiles/76561198311498888#!/compare/1584835200/1584921600

https://backpack.tf/profiles/76561198859942729#!/compare/1585440000/1586908800

idk

Marketplace sales (2-4 sales)

Couldn't find item history

https://marketplace.tf/items/tf2/30912;5;u32

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

12.22 on Mar 28

12.22/1.69=7.23=7k

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10 on Mar 30

10/1.69=5.9=6k

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11.89 on Apr 12

11.89/1.71=6.95=7k

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12.99 on Apr 19 (credit goes to K1ng)

12.99/1.79=7.257=7.5

Buyers above 6 keys, so calling that an outlier, and going with 7 - 7.5 keys.