3 other sales that occurred:

https://backpack.tf/profiles/76561199199711319#!/compare/1646438400/1646611200

https://backpack.tf/profiles/76561198442389980#!/compare/1646438400/1646524800

Sold for 55 keys

https://backpack.tf/profiles/76561198442389980#!/compare/1649376000/1649462400

https://backpack.tf/profiles/76561198062565400#!/compare/1649376000/1649462400

Sold for 40 keys

https://backpack.tf/profiles/76561198062565400#!/compare/1649635200/1649721600

https://backpack.tf/profiles/76561198093629892#!/compare/1649635200/1649721600

Sold for 47 keys

Note that 55 seller resold for 40(likely a buy order) and was unable to sell for a month or so for 65:

https://gladiator.tf/listings/6249243dd57ee8df7ca1f250

Given the 4 usable sales we now have, cutting the low and high end and taking 47 - 55 would be the better call here. If anything, 60 flat would definitely not work.