Update!

Sale 1: https://backpack.tf/profiles/76561198021055079#!/compare/1590969600/1591056000

https://i.imgur.com/XII5suz.png - credits to Jarool!

22 pure.

Sale 2: https://backpack.tf/profiles/76561198267189538#!/compare/1591574400/1591660800

https://backpack.tf/profiles/76561198202133459#!/compare/1591401600/1591660800

11 pure + ~2 keys in adds

11 + 2 = 13

Black Box: https://backpack.tf/profiles/76561198087099341#!/compare/1593129600/1593216000

https://backpack.tf/profiles/76561198383523581#!/compare/1593129600/1593561600

Sold for a key?

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Additional by Xergoyf:

https://stntrading.eu/item/tf2/Unusual+Disco+Beat+Down+One-Man+Army - 17 keys 19 ref now but could of been less then

https://backpack.tf/profiles/76561198311498888#!/compare/1588636800/1588723200 - can trace 16 here, no ID match but a 16 group has history matches

https://backpack.tf/profiles/76561198063126529#!/compare/1588636800/1588723200

Usually the keys are there but the ref is missing, so its possible the sale could round to 17 however with what I can see its safer to call this 16 flat

15 seller sold untrace, so theres nothing there, however judging by the history it could of been listed for over a month https://backpack.tf/item/7957424309

We have sales at 13, 16 and 22, I would probably just go 16 flat here, median of large range is 16.5 so 16 should be fine here

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Classies: https://i.imgur.com/2Gq1OjN.png. 16