Sale 1:

Sold for Spec. KS Aussie Ambassador (~12)

No outpost

Seller: http://backpack.tf/profiles/76561198163755834#!/compare/1494028800/1494115200

Buyer: http://backpack.tf/profiles/76561198119167317#!/compare/1494028800/1494115200

I think the Ambassador was being auctioned here.

X = 12

Sale 2:

Sold for 11 keys

No outpost

Seller: http://backpack.tf/profiles/76561198119629032#!/compare/1493510400/1493596800

Buyer: http://backpack.tf/profiles/76561198163755834#!/compare/1493510400/1493596800

X = 11

Sale 3:

Quicksold for 9 keys + ~2.5 keys in items

http://www.tf2outpost.com/trade/28854046 - B/O of 11

Seller: http://backpack.tf/profiles/76561198092449612#!/compare/1490918400/1491004800

Buyer: http://backpack.tf/profiles/76561198267408426#!/compare/1490918400/1491004800

X = 11 (Capped by B/O)

Sale 4:

Bulk for Molten Mallard Brown Bomber

Seller: http://backpack.tf/profiles/76561198316071886#!/compare/1490832000/1490918400

Buyer: http://backpack.tf/profiles/76561198092449612#!/compare/1490832000/1490918400

Sellers:

$28.22 on marketplace.tf: (~13.6 keys)

https://marketplace.tf/items/721;5;u7

http://backpack.tf/item/928200490

Sales at:

11 (2x)

12

One of the sales at 11 quicksold, and we are unable to determine how long the other seller has been on the market for. Excluding 11.

Going with 12 flat.