Isn't that a quicksell though? I got someone offered me one of this but I refused because there were 2 quicksellers on bp, one for 65 (or 69, can't remember but around that price) and one for 71

http://www.tf2outpost.com/trade/28111043 sold within a day, classes as a quicksell.

Sold + aces antlers for burning hallmark

http://backpack.tf/profiles/76561198124781832#!/compare/1459468800/1459728000

Should be used for hallmark instead

Sold for 60 keys

http://www.tf2outpost.com/trade/27959979

http://backpack.tf/profiles/76561198057913267#!/compare/1459296000/1459555200

idk what this was for, but it involved that miami sammy

http://backpack.tf/profiles/76561198109272505#!/compare/1459382400/1459555200

Sold for 65 keys to a scraptf bot

https://backpack.tf/profiles/76561198153963409#!/compare/1461542400/1461628800

Sold for a RA metaldrill

http://backpack.tf/profiles/76561198066223818#!/compare/1460592000/1460764800

~67

Id want to wait for more sales here, but all in all this may be close enough