Resubmit with range because of additional info about previous sale (see discussion here https://backpack.tf/suggestion/6a4275d44970c181b70abed4). Thanks to Moose for looking it up.

Item history

https://backpack.tf/item/6979903772

1 of 1 strange

https://next.backpack.tf/almanac/search?itemName=Pirate%20Bandana&quality=5&particle=12&elevatedQuality=11

Most recent sale

Bought from bot for 33 keys.

Seller compare

https://backpack.tf/profiles/76561198850178158#!/compare/1782604800/1782691200

Buyer compare

https://backpack.tf/profiles/76561197988875517#!/compare/1782086400/1782691200

Listing snapshots

https://next.backpack.tf/classifieds/snapshots/Strange%20Massed%20Flies%20Pirate%20Bandana/

Previous sale on mp.tf for $62.25 @ $1.98/key ~ 31 keys

https://marketplace.tf/items/tf2/30180;5;u12;strange

https://backpack.tf/profiles/76561198081269743#!/compare/1776816000/1776988800

https://backpack.tf/profiles/76561198850178158#!/compare/1776902400/1776988800

Quote by Moose: "However it was dumped to the QS bot 9 days later for 33 keys~ however it was also sold along side a Hot Professional Killstreak Brawler's Iron Iron Bomber (Field-Tested) + Strange Scot Bonnet"

Quote by Moose: "Not sure if there is a way to check key prices on sales after 3 months but 31 is probably right as the closest I could find was them at $1.98 which is yeah, 31 - https://backpack.tf/suggestion/69e4866e1bc724278b0a3008 But yeah that makes sense to range it since no buyers counter even if it was dumped"