Learned the hard way that I needed to keep these simple, here it is.

Thank you for helping @Ramen and @ツ JoXu ツ!

Unpriced

One of one in existance

Sale #1

https://backpack.tf/profiles/76561198393784990#!/compare/1512172800/1512259200 - Buyer (麻美)

Sold for an Orbiting Fire Woolen Warmer, 75 keys which was priced 2 months ago.

https://backpack.tf/profiles/76561198163258879?time=1512259200 - Seller's backpack after the trade.

Sale #2

This sale was made before Sale #1

https://backpack.tf/profiles/76561198142937762#!/compare/1512172800/1512259200 - Seller

https://backpack.tf/profiles/76561198163258879#!/compare/1512172800/1512259200 - Buyer (ツ | trade.tf), backpack.tf checks as if the buyer traded the shown items for an Orbiting Fire Woolen Warmer, it's because it was traded afterwards for the Phononaut.

https://backpack.tf/item/6385941979 - Vivid Plasma Phononaut history as proof that it was traded again after Sale #2

Sold for 88 keys,

Tesla Coil Falkirk(42) + The High Five!(38) + Mackarel(5) + ~3 keys in Taunts,

Tesla Coil Falkirk mini:

https://marketplace.tf/items/30357;5;u108 = ~42 keys, current sellers support.

Ghastly Ghosts Taunt: The High Five! mini:

https://backpack.tf/profiles/76561198378120184#!/compare/1510876800/1510963200 - Sold for a Bubbling Helmet Without a Home(10) + 28 keys = 38

Bubbling Helmet Without a Home mini:

https://backpack.tf/profiles/76561198087172601#!/compare/1508198400/1508284800

Sold for a Smoking Bloke's Hat(9.5) + ~.9 in sweets = rounds to 10

Any proof and/or counter-proof is appreciated!