Item 1:

https://backpack.tf/item/13023260187

Sale 1:

https://backpack.tf/profiles/76561198327212449#!/compare/1752883200/1752969600

https://backpack.tf/profiles/76561198309544456#!/compare/1752796800/1752969600

Sold to an STN bot

The rest of the histories moved same day. Moved between STN bots then bought and moved to MP. Untrace on owner

Item 2:

https://backpack.tf/item/13298652624

Sale 2:

https://backpack.tf/profiles/76561198882886230#!/compare/1753488000/1753574400

https://backpack.tf/profiles/76561198130765008#!/compare/1754438400/1756512000

Untrace

Item 3:

https://backpack.tf/item/14845122662

Sale 3:

https://backpack.tf/profiles/76561198316071886#!/compare/1757548800/1757635200

https://backpack.tf/profiles/76561198113899098#!/compare/1757635200/1757721600

Sold for 3 keys pure (ID 16159446443)

The other keys were used here:

https://backpack.tf/suggestion/68c50e234b99a16dea010f4f

Sellers:

BPTF - https://imgur.com/a/0b7ICBc - Listed on MP (Based on comments 3.7 keys)

MPTF - https://marketplace.tf/items/tf2/30616;5;u3147 - 2 @ $6.66 (~3.6 keys)

STN - https://stntrading.eu/item/tf2/Unusual+Dragonflies%27+Nature+Taunt%3A+The+Proletariat+Posedown - None

SCM - https://steamcommunity.com/market/listings/440/Unusual%20Taunt%3A%20The%20Proletariat%20Posedown?filter=Dragonflies%27+Nature - None

Sale(s):

3

Going with 3 keys flat