Free suggestion (Thanks K1ng):

Death at Dusk Killer's Kabuto

https://prntscr.com/ks2sso

https://backpack.tf/item/3674013505 120

Sale 1:

https://backpack.tf/profiles/76561198122440175#!/compare/1529884800/1529971200

https://backpack.tf/profiles/76561198131633162#!/compare/1529884800/1529971200

Sold with 45 keys for a Bonzo Tyrantium Helmet (145 keys).

Going with flat 100 for the Kabuto.

Sale 2

https://backpack.tf/profiles/76561198131633162#!/compare/1530576000/1530662400

https://backpack.tf/profiles/76561198128213644#!/compare/1530576000/1530662400

Sold for 58 keys + Bubbling HWNN(17.5) + sweets(~1.4 at the time) = rounds to 78

Taking current price of the HWNN because the price was accepted after the sale happened.

Sales at 78 and 100.

New price = 78-100