Acquired mine in 2015 if you're asking...

Lowest sellers at 58.

Sale #1

https://backpack.tf/profiles/76561198053747026#!/compare/1546819200/1546905600

Sold for 45 keys low-end

Sale #2

https://backpack.tf/profiles/76561198025832281#!/compare/1541548800/1542067200

Sold for duped Scorching Football Helmet (outdated + no recent sale) - not using

Sale #3

https://backpack.tf/item/3342865813

Prolly this sale https://marketplace.tf/items/337;5;u16 $90 keys at $1.65 at the time -> 55 keys high-end

Sale #4

https://backpack.tf/profiles/76561198865146461#!/compare/1544918400/1545004800 no trace

Sale #5

https://backpack.tf/profiles/76561198404680393#!/compare/1547337600/1547510400 no trace

Sale #6

https://backpack.tf/profiles/76561198404680393#!/compare/1546905600/1546992000

Sold with Searing Charmer for 100 keys -> 52 keys, supports the range

Mini on Charmer

https://backpack.tf/profiles/76561198313538268#!/compare/1546819200/1546905600 48 pure

Any pertinent comments are welcome.