Also surprisingly rare.

Added 2 Keys for a Purple Confetti Chieftain's Challenge(15 Keys, Offered)(13 Keys total)

http://backpack.tf/profiles/76561198064270845?time=1447142400 (November 10th)

http://backpack.tf/profiles/76561198064270845?time=1447315200 (November 12th)

http://backpack.tf/profiles/76561198101492148?time=1447142400 (November 10th)

http://backpack.tf/profiles/76561198101492148?time=1447228800 (November 11th)

http://www.tf2outpost.com/trade/27394791

Sold for a Blizzardy Storm Glengarry Bonnet(14 Keys with Overpay)

http://backpack.tf/profiles/76561198059010618?time=1447488000 (November 14th)

http://backpack.tf/profiles/76561198059010618?time=1447574400 (November 15th)

http://backpack.tf/profiles/76561198101492148?time=1447488000 (November 14th)

http://backpack.tf/profiles/76561198101492148?time=1447574400 (November 15th)

Two sales, 13-14 Keys should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.