2 years outdated.

Sold for 15 keys + 16 refined

https://backpack.tf/profiles/76561198002757046#!/compare/1589241600/1589328000

https://backpack.tf/profiles/76561198964701363#!/compare/1588982400/1589328000

Rounds to 15 keys

Sold for 16 keys

https://backpack.tf/profiles/76561198021055079#!/compare/1588723200/1588809600

https://backpack.tf/profiles/76561198191738386#!/compare/1587945600/1588809600

Sold for 16 keys

https://backpack.tf/profiles/76561198337734785#!/compare/1585958400/1586044800

https://backpack.tf/profiles/76561198135626172#!/compare/1585699200/1587600000

Sold for 34.64 on May 8, 2020 (34.64/1.89 = 18.32 rounding to 18 keys)

Sold for 34.64 on May 25, 2020 (34.64/1.88 = 18.42 rounding to 18 keys)

Sold for 34.64 on May 27, 2020 (34.64/1.92 = 18.04 rounding to 18 keys)

https://marketplace.tf/items/tf2/30109;5;u61

https://backpack.tf/item/8075069881

Classifieds:

https://gyazo.com/2da480cb64e75aae90edb91db456d4fd

1 @ 15 keys

2 @ 16 keys

3 @ 18 keys

Taking a range of 15-18 keys here.