A teacher who is attempting to teach without inspiring the pupil with a desire to learn is hammering on cold iron. - Horace Mann

Classifieds: http://backpack.tf/classifieds?item=Coldsnap+Cap&quality=6&tradable=1&craftable=1&australium=-1

Screenshots of Classifieds: http://imgur.com/a/uYOKg

<Sellers>

[1.77] http://backpack.tf/item/4968922966 - http://backpack.tf/u/76561198315555780 - Listed about 22 hours ago, BOT

[1.77] http://backpack.tf/item/4269561494 - http://backpack.tf/u/76561198317401621 - Listed about 8 hours ago, BOT

[1.77] http://backpack.tf/item/5076097328 - http://backpack.tf/u/76561198306870587 - Listed about 6 hours ago, BOT

[1.77] http://backpack.tf/item/5058745559 - http://backpack.tf/u/76561198067575136 - Listed a day ago, CA$HEW, regularly bumped

[1.77] http://backpack.tf/item/5064120761 - http://backpack.tf/u/76561198311820950 - Listed about 19 hours ago, BOT

[1.77] http://backpack.tf/item/3315116431 - http://backpack.tf/u/76561198010272079 - Listed about an hour ago, very young

[2.00] http://backpack.tf/item/3298493455 - http://backpack.tf/u/76561198005367541 - Listed about 7 hours ago, regularly bumped

[2.00] http://backpack.tf/item/3306998606 - http://backpack.tf/u/76561198311725787 - Listed about 19 hours ago, BOT

[2.00] http://backpack.tf/item/3685343014 - http://backpack.tf/u/76561198062911189 - Listed a day ago, regularly bumped

[2.00] http://backpack.tf/item/3422659367 - http://backpack.tf/u/76561198109272505 - Listed 7 hours ago, hasn't been bumped since.

1.77 seems to be the way to go. Highest is 1x at 1.66 refined.