Circling Heart Frenchman's Beret

Original Price: 2.5-3 [10 months old]

Level 83 ones are duped and not included in this suggestion. Level 58 appears to be duped as well and are not included (including the one with a B/O of 2.8 for a week).

http://www.tf2outpost.com/trade/15473773 - $100 [~3, sale's 3.5 months old]

http://www.tf2outpost.com/trade/15008097 - Strange Festive Knife [19.5 keys] + Strange Festive Grenade Launcher [10 keys] + Strange Festive Huntsman [10 keys] + Strange Festive Buff Banner [5 keys] + Strange Festive Sandvich [6 keys] = [~3, using prices & bud value from when the sale was made, which was 2 months ago]

http://www.tf2outpost.com/trade/15798000 - Max Severed Head [2.5 buds] + B.M.O.C [11.5 keys] = [~3.1, using the price of a Max from when the trade was made] - This one is duped, but its sale is consistent with the others.

Sales: ~3 (fairly old), ~3, ~3.1

Final range: 3-3.1

Trades with outdated prices (not included in the range):

http://www.tf2outpost.com/trade/17146611 - Electrostatic Exquisite Rack [3.4, 8 month old price]

http://www.tf2outpost.com/item/440,2342314447,180,5 <> http://www.tf2outpost.com/item/440,2352608786,180,5 - Purple Energy Frenchman's Beret [3.2, 6 month old price]