A few recent sales on this caribou:

Sale 1 & 2 via Marketplace.tf:

https://marketplace.tf/items/30974;5;u7

Sold on Feb. 23 for $25.00 | $1.81: https://manic.tf/keyprice/?at=2019-02-23&price=25.00 | 13.81 = 14 keys

Sold on Mar. 14 for $39.99 | $1.8: https://manic.tf/keyprice/?at=2019-03-14&price=39.99 = 22.22 = 22 keys = Excluding because unusual was bought from a scammer: https://backpack.tf/item/7512622619

Sale 3:

https://backpack.tf/profiles/76561198045992174#!/compare/1554681600/1555372800

https://backpack.tf/profiles/76561198085931736#!/compare/1555027200/1555113600

Sold for P.Fetti Crack Pot + 5 keys

Mini for Crack Pot:

https://backpack.tf/suggestion/5ca460a1d381722f6e62cf6e

5 + 9.25 = 14.25 = 14 keys

Sale 4:

https://backpack.tf/profiles/76561198144444397#!/compare/1553731200/1553904000

https://backpack.tf/profiles/76561198034775190#!/compare/1553817600/1553904000

Sold for 14 keys pure

Sale 5:

https://backpack.tf/profiles/76561198034775190#!/compare/1553990400/1554163200

https://backpack.tf/profiles/76561198423264305#!/compare/1552780800/1554249600

Sold with 10 keys for HG Millennial Mercenary = Won't use there due to buyorders being @ 26 keys

Taking 14 keys