Sale 1. (27-10-2016)

Sold with 0.5 key of sweets for a Circling TF Prussian Pickelhaube(20)

X + 0.5 = 20

X = 19.5 (rounding up to 20 Keys)

http://backpack.tf/profiles/76561198049793971#!/compare/1477526400/1477785600

http://www.tf2outpost.com/trade/28454268

Mini for Circling TF Prussian Pickelhaube

http://backpack.tf/suggestion/5820d777866747532c42aee7

Sale 2. (12-10-2016)

Sold for a Smoking Herald’s Helm worth 15.5 rounding up to 16 Keys.

http://backpack.tf/profiles/76561198125329673#!/compare/1476144000/1476230400

No outpost.

No mini required; Herald is in date.

Sale 3. (13-10-2016)

Sold for a Blizzardy Storm Otolaryngologist's Mirror.

http://backpack.tf/profiles/76561198125329673#!/compare/1476230400/1476316800

http://www.tf2outpost.com/trade/28538626

Using to price the Mirror.

Sale 4. (18-10-2016)

Sold with 1 Key for a Dead Presidents Minnesota Slick.

http://backpack.tf/profiles/76561198153939217#!/compare/1476662400/1476748800

No outpost.

Using to price the Minnesota Slick.

Sale 5. (20-10-2016)

Sold for a Miami Nights Napoleon Complex.

http://backpack.tf/profiles/76561198153939217#!/compare/1476921600/1477008000

http://www.tf2outpost.com/trade/28551689 - outpost doesn’t help, price was on bp.tf

Using to price the Napoleon Complex.

Sales at 16 and 20. All other sales are for unusuals that have 0 sales.

Therefore taking the range as 16-20 Keys.