The Sale:

Sold for 12 keys

No outpost, but:

https://webcache.googleusercontent.com/search?q=cache:HJgT4XJZH3QJ:https://backpack.tf/stats/Unusual/Baron%2520von%2520Havenaplane/Tradable/Craftable/7+&cd=1&hl=en&ct=clnk&gl=au

http://i.imgur.com/jjGZNhH.png - B/O of 12 here, was consistent for quite a while.

Seller: http://backpack.tf/profiles/76561198123288580#!/compare/1497139200/1497225600

Buyer: http://backpack.tf/profiles/76561198183775386#!/compare/1497225600/1497312000

X = 12

Another sale:

No outpost

Seller: http://backpack.tf/profiles/76561198258937500#!/compare/1491696000/1491782400

Buyer: http://backpack.tf/profiles/76561198041898052#!/compare/1491696000/1491782400

Absoultely no idea what happened here. Didn’t sell for the keys, apparently most of the keys in the seller’s link went to the buyer, so I’d assume the seller here bought something more expensive with the confetti thing and the keys. Thought I’d include this sale here so we could get a little more insight to it.

Sales at:

12

No current sellers.

Going with 12 flat.