Next.

Sale 1: Sold for Strange Australium Force-A-Nature[13 keys]+1 key of sweets

http://backpack.tf/profiles/76561198134652497#!/compare/1460764800/1460937600

13+1=14 keys

Sale 2: Bulk for Stormy 13th Hour Attendant

http://backpack.tf/profiles/76561198089658143#!/compare/1460937600/1461024000

Sale 3: Sold for Bubbling Pyro's Beanie[14 keys via mini]

http://backpack.tf/profiles/76561198134652497#!/compare/1460505600/1460592000

Sale 4: Sold for 15 keys

http://backpack.tf/profiles/76561198128675968#!/compare/1460678400/1460851200

doesnt seem like these keys were even involved. histories dont match, ignoring this sale.

Mini on Beanie: http://backpack.tf/suggestion/5725211c8667471e684d33e4

I have sales at 14 and 14. Making this 14 keys flat.