This is confusing, I know, but bear with me.

http://backpack.tf/item/3416976799

Sale 1) Sold for a Smoking El Jefe (18 Keys)

http://backpack.tf/profiles/76561198268663874#!/compare/1471737600/1471824000

Sale 2) Sold for a Stormy Storm Waxy Wayfinder (15 Keys), ultimately.

http://imgur.com/a/TFDu0 - Credits to }}XP3{{ Panfa (Scrap2GPan)

Waxy Mini

http://backpack.tf/profiles/76561198227986604#!/compare/1472342400/1472428800 - Sold for 14 Keys + ~1 Key of Items

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Here's the story. I'll try to make this as sensible as possible.

http://imgur.com/a/TFDu0 - Panfa loses the Wayfinder and Ref to Starshot, and gets the Waxy. Then, Panfa loses the Waxy to Frost, and gets the Letch's.

http://backpack.tf/profiles/76561198285707350#!/compare/1471824000/1471910400 - Then, Frost loses the Waxy to iSpiffy, and gets the Billy.

http://backpack.tf/profiles/76561198285707350#!/compare/1471737600/1471824000

I still don't know why Frost loses the Pampered and Ref, if he never got it from Panfa to begin with (Starshot got it from Panfa, as stated in the images).