Yuck

Only recent sale

Sold for 29$ on mannco.store in Sep 11

https://mannco.store/item/440-memory-leak-unusual-pyros-boron-beanie

29/1.75=17k

https://backpack.tf/profiles/76561198850178158#!/compare/1664236800/1664323200 - No idea what Anthuan sold it for

Whatever it was, the buyer dumped it to Scrapyard

https://backpack.tf/profiles/76561198453530349#!/compare/1665100800/1665360000 - 16 Keys match here from Scrapyard's sale

https://backpack.tf/profiles/76561199238815382#!/compare/1665100800/1665446400 - The buyer got some Refined with the Beanie

https://imgur.com/a/aBPGirt - The buyout was 15.77 Keys, so this sale will round to 16 Keys

https://backpack.tf/profiles/76561198118317390#!/compare/1666224000/1666656000 - No idea

It looks like the person who paid 17 Keys in the Mannco sale dumped it soon afterward to quicksell.store, so 17 shouldn't be used here.

16 flat would work