Harold

https://backpack.tf/item/5395667274

Sale 1) Sold for 31 Keys

https://backpack.tf/profiles/76561198337734785#!/compare/1540857600/1540944000

https://backpack.tf/profiles/76561198196763853#!/compare/1540857600/1540944000

https://backpack.tf/profiles/76561198124857271#!/compare/1540857600/1540944000 - The Airdog sold for 25 Keys first

Sale 2) Sold for an Abduction Universal Translator (30.5 Keys)

https://backpack.tf/profiles/76561198196763853#!/compare/1541462400/1541635200

Rounding down to 30 Keys because of the Translator's Sellers ---> https://imgur.com/a/MyAHW41

https://marketplace.tf/items/30769;5;u58 - Sold for $64.9 when Keys were ~$1.86 each, $59.99 (~$1.85 each), and $45 (~$1.84 each)

https://marketplace.tf/items/5021;6/Mann%20Co.%20Supply%20Crate%20Key

64.9 / 1.86 = 34.89, which rounds to 35 Keys

59.99 / 1.85 = 32.42, which rounds to 32 Keys

45 / 1.84 = 24.45, which I'll count as a low outlier.

Every other "sale" was the Helm being gambled.