Untraceable/unusable sales:

https://backpack.tf/item/2386905790 - Only trades here are tradeit.gg and banned accounts.

#1

Bulk for Planets Pyromancer’s Mask

Seller: https://backpack.tf/profiles/76561197989057250#!/compare/1527897600/1527984000

Buyer: https://backpack.tf/profiles/76561198125791160#!/compare/1527897600/1527984000

https://backpack.tf/item/2345247170

#2

Untraceable, sold to scrap.tf

Seller: https://backpack.tf/profiles/76561198125791160#!/compare/1533168000/1533254400

Buyer: https://backpack.tf/profiles/76561198135388328#!/compare/1533168000/1533254400

https://backpack.tf/item/2345247170

Using unsolds.

Sellers:

https://i.imgur.com/eibVvHf.png

https://backpack.tf/item/2386905790 - ~16.06 keys, ~20 days

https://backpack.tf/item/2628360678 - 20 keys, ~4 months

On scrap.tf for ~15.95 keys:

https://i.imgur.com/yGmzM9n.png

https://backpack.tf/item/2345247170

https://backpack.tf/profiles/76561198135388328#!/compare/1534204800/1534291200 - Obtained ~15th August

Unsolds at ~16. The one on the classifieds is old enough to be used for a B/O drop.

Going with 16 flat.