Wet

https://backpack.tf/item/6897408884

Sale 1) Bulk sale for ? Keys

https://backpack.tf/profiles/76561198140316312#!/compare/1561680000/1561766400

Sale 2) Sold for 19 Keys

https://backpack.tf/profiles/76561198140316312#!/compare/1562371200/1562457600

https://backpack.tf/item/7146701802

Sale 3) ?

https://backpack.tf/profiles/76561198131918132#!/compare/1559606400/1560643200

https://backpack.tf/profiles/76561198353286168#!/compare/1560556800/1560643200

10 Keys match.

Sale 4) Sold for a Cloud 9 Toy Soldier + 2 Keys

https://backpack.tf/profiles/76561198353286168#!/compare/1560729600/1560902400

https://imgur.com/a/VHLgbni - Capped by the Buyout of 16 Keys

Toy Soldier Mini

https://backpack.tf/profiles/76561198132111326#!/compare/1560729600/1560816000 - Sold for a Strange Spec KS Original (~17 Keys)

https://imgur.com/a/5iYMe4a - Capped by the Buyout of 16 Keys

https://backpack.tf/profiles/76561198072526377#!/compare/1562544000/1563580800 - Sold for a Bubbling Tundra Top

https://backpack.tf/profiles/76561198197769685#!/compare/1556582400/1556755200 - Sold for a Planets Reggae + Rockets Oblooterated

https://backpack.tf/profiles/76561198236774862#!/compare/1556755200/1556928000 - Sold for a Terror-Watt Cloud Crasher

Sale 5) SCM sale

https://backpack.tf/profiles/76561198850185511#!/compare/1560902400/1562544000

https://backpack.tf/profiles/76561198409106605#!/compare/1562112000/1562198400

https://backpack.tf/item/7232144812

Sale 6) Sold for 14 Keys + 20 Refined

https://backpack.tf/profiles/76561198147125201#!/compare/1559174400/1559520000

Sale 7) Sold for a Miami Nights Triboniophorous Tyrannus

https://backpack.tf/profiles/76561198263801172#!/compare/1563667200/1563753600

https://backpack.tf/profiles/76561198957535243#!/compare/1563667200/1563753600

https://imgur.com/a/pvnN4vC - Matches or is capped by the Buyout of 18 Keys

Tyrannus Mini

https://backpack.tf/profiles/76561198050933686#!/compare/1563408000/1563494400 - Sold for 17 Keys

https://backpack.tf/profiles/76561198062365679#!/compare/1563580800/1563753600 - Quicksold for 16 Keys

https://backpack.tf/profiles/76561198263801172#!/compare/1563667200/1563753600 - Some of the Keys from the 16 bought the Box Trot

https://backpack.tf/profiles/76561198323733331#!/compare/1563580800/1563667200 - Sold for a Smoking Tree + 1 Key + <0.5 Keys of Items

https://marketplace.tf/items/tf2/151;5;u61 - Sold for $34 when Keys were ~$1.81 each

https://marketplace.tf/items/tf2/5021;6

34 / 1.81 = 18.78, which rounds to 19 Keys

Sale 8) ?

https://backpack.tf/profiles/76561198957535243#!/compare/1563667200/1563753600

https://backpack.tf/profiles/76561198447083961#!/compare/1563494400/1563753600

https://marketplace.tf/items/tf2/30658;5;u29 - Sold for $29.99 when Keys were ~$1.82 each

https://marketplace.tf/items/tf2/5021;6

29.99 / 1.82 = 16.47, which rounds to 16 Keys

https://imgur.com/upload - Seller at 18

https://backpack.tf/item/7232144812

Calling 14 low due to the volume of sales for higher.