Item 1

https://backpack.tf/item/12612836988

Sale #1

Sold with 20 keys for a spelled Genuine Deadliest Duckling (no usable sales for the spelled Duck)-

Seller: https://backpack.tf/profiles/76561198169491384#!/compare/1683504000/1683763200

Buyer: https://backpack.tf/profiles/76561198085880346#!/compare/1683331200/1683763200

Item 2

https://backpack.tf/item/10724454425

Sale #2

Untraceable-

Seller: https://backpack.tf/profiles/76561198109210733#!/compare/1689033600/1690243200

Buyer: https://backpack.tf/profiles/76561198316071886#!/compare/1690243200/1690588800

Marketplace.tf Sales

https://marketplace.tf/items/tf2/31185;5;u182

MP.TF Sale #1

Sold for $69.99 on May 29, 2023

Keys @ $1.99

69.99/1.99 = 35.17ish keys

MP.TF Sale #2

Sold for $40 on July 15, 2023

Keys @ $

40/1.98 = 20.20ish keys

MP.TF Sale #3

Sold for $69.99 on July 30, 2023

Keys @ $1.95

69.99/1.95 = 35.89ish keys

Sales @ 20, 35, 36

Taking 35-36