Well. The Bomber was offered... twice.

Epic Rap Battles comes on and I'm like (⌐◼︎_◼︎)

http://backpack.tf/item/3346295059

Sale 1) Sold for a DBD Shako (32) + 3 Keys = 35 Keys

http://backpack.tf/profiles/76561198144380009?time=1438239600&compare=1438326000

http://backpack.tf/item/2815140889

Sale 2) Sold for a GE Tree (47 Keys)

http://backpack.tf/profiles/76561198076545687?time=1439190000&compare=1439708400

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http://www.tf2outpost.com/trade/26512904 - Bomber was offered in sale #1

http://www.tf2outpost.com/trade/26747428 - And in sale #2

Thanks for pointing this out Marty.