3 years

https://backpack.tf/item/921903037 ~ duped (no sale)

https://backpack.tf/item/932067854

Sale #1:

https://backpack.tf/profiles/76561198068640262#!/compare/1716163200/1716249600 ~ added 100 keys for a Burning Flames Hat With No Name

https://backpack.tf/profiles/76561198049940865#!/compare/1716076800/1716163200

Mini:

https://backpack.tf/suggestion/66507e80cea5bd0689082e40 ~ 400

= 300 keys.

Sale #2:

https://backpack.tf/profiles/76561198840987606#!/compare/1715212800/1715299200 ~ the nearID matches are.. not enough

https://backpack.tf/profiles/76561198049940865#!/compare/1715126400/1715299200 ~ ok im confused

Sale #3:

https://backpack.tf/profiles/76561198265550041#!/compare/1713744000/1714348800 ~ cant use as theres no sales on the Isotope Festivized Specialized Killstreak Croc Dusted Minigun (Battle Scarred) which appears to be the focus of the trade.

https://backpack.tf/profiles/76561198840987606#!/compare/1714262400/1714348800

Sale #4:

https://backpack.tf/profiles/76561198083387493#!/compare/1708905600/1712102400 ~ 350 keys history match from jearvisblikns@syd

Sales @ 300, 350