https://backpack.tf/item/7264003910

Dumped to a bot, ~10 keys match

https://backpack.tf/profiles/76561198056823555#!/compare/1746748800/1749772800

https://backpack.tf/profiles/76561198378207723#!/compare/1746662400/1746748800

50 keys appear in buyer's compare

https://backpack.tf/profiles/76561198378207723#!/compare/1746748800/1746921600

https://backpack.tf/profiles/76561197972510204#!/compare/1746748800/1746921600

Bulk for Kill-a-Watt Team Captain:

https://backpack.tf/profiles/76561197972510204#!/compare/1747440000/1747958400

https://backpack.tf/profiles/76561198142349119#!/compare/1747872000/1747958400

Dumped to STN, nothing matches:

https://backpack.tf/profiles/76561198142349119#!/compare/1749168000/1749254400

https://backpack.tf/profiles/76561199026390261#!/compare/1749168000/1749254400

Potentially ~61 keys https://stntrading.eu/item/tf2/Unusual+Omniscient+Orb+Tundra+Top

75 keys:

https://backpack.tf/profiles/76561199026390261#!/compare/1752019200/1752105600

https://backpack.tf/profiles/76561199142817642#!/compare/1751846400/1752105600

https://marketplace.tf/items/tf2/30976;5;u120 Seller at ~99 keys

https://steamcommunity.com/market/listings/440/Unusual%20Tundra%20Top?filter=Omniscient+Orb No sellers

We have a sale at 50, a potential sale at 61 and a sale at 75.

Not a big fan of this but I think including 50 is the safest option despite the buyers at 52, the potential sale at 61 supports having a lower end and 75 flat seems high here since it would be using 1 of 3 sales.

Going with 50-75 keys