And then there's this thing.

Sold for a Circling TF Logo Hustler's Hallmark(30 Keys) and a Purple Confetti Defiant Spartan(17 Keys)(47 Keys total)

http://backpack.tf/profiles/76561198071553799#!/compare/1458864000/1459296000

Sold for 42 Keys and ~6 Keys in Sweets(48 Keys total)

http://backpack.tf/profiles/76561198066701092#!/compare/1456732800/1456992000

Sold for 47 Keys

http://backpack.tf/profiles/76561198076218381#!/compare/1455091200/1455350400

Sold for a Scorching Flames Buccaneer's Bicorne(39 Keys) and ~7 Keys in Sweets(46 Keys total)

http://backpack.tf/profiles/76561198170455270#!/compare/1458370800/1458457200

Sales seem to fit, 46-48 Keys should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.