1/4 unusual, pretty huge range. Let's fix that.

Proof:

http://backpack.tf/item/1200518912 (stormy hour)

http://backpack.tf/item/3269672985 (Mallard)

As you can see, these used to be mine until I traded them to andy

http://backpack.tf/item/4242492982 (Mallard muffs)

You can see that andy owned this before he traded it to me

Mini for the noir

Sold for Aces High Pyromancer’s Mask:

Seller: http://backpack.tf/profiles/76561198017901187/#!/compare/1456214400/1456387200

Buyer: http://backpack.tf/profiles/76561198081708199/#!/compare/1456300800/1456387200

Sold for Blizzard Brainiac Hairpiece:

Seller: http://backpack.tf/profiles/76561198138584731/#!/compare/1456214400/1456473600

Buyer: http://backpack.tf/profiles/76561198123097664/#!/compare/1456387200/1456473600

Sold for Miami Pith Helmet + Orb. Fire Private Eye

Seller: http://backpack.tf/profiles/76561198123097664/#!/compare/1457078400/1457164800

Buyer: http://backpack.tf/profiles/76561198137419591/#!/compare/1457164800/1457337600

Everything but the Miami Pith is oudated here.

Minis for the unusuals used to buy the noir above

Brainiac Hairpiece: 33-34 (Rounds to 34 for this sale)

http://backpack.tf/vote/id/56fca5d8866747125a071d97

Private eye: 17-20 (18.5)

Sale 1:

Sold for 19 keys and 13 ref in cosmetics

http://www.tf2outpost.com/trade/27734082 - B/O of 20

Seller: http://backpack.tf/profiles/76561198070377972/#!/compare/1453622400/1453708800

Buyer: http://backpack.tf/profiles/76561198072288723/#!/compare/1453622400/1453968000

X = 20

Sale 2:

Sold for Normal Flamethrower

http://www.tf2outpost.com/trade/27998374 - B/O of 30

Seller: http://backpack.tf/profiles/76561198125327740/#!/compare/1459123200/1459382400

Buyer: http://backpack.tf/profiles/76561198093998184/#!/compare/1459036800/1459123200

X = 17

There were other sales that had me a bit confused, so I didn't make a price suggestion out of that one.

This would bring the Miami Pith + Orbiting Private eye sale at 37.5 (rounds to 38)

Pyromancer's:

Sold for Green Confetti Thirst Blood + Orbiting Planets Pirate Bandana

Seller: http://backpack.tf/profiles/76561198108313456/#!/compare/1453708800/1453795200

Buyer: http://backpack.tf/profiles/76561198081708199/#!/compare/1453708800/1453795200

X = 26 + 17

X = 43

So, the Detective Noir Sales would be 34, 38, 43, so you could have a range of 34-43 for it. This would bring its value to 38.5.

Also, since the Fruit shoot has no sales other than the one that probably sold for real world money, and is also outdated by only ~4 days, you might be able to use its current price for this one. Don't take my word for it, though.

If that is allowed, then this would bring the Mallard Muffs to 103 keys (53 + 38.5 + 11 = 102.5, rounding to 103)

Credits to Jarool for helping me with this information

Also, to back this up, heres another sale:

Sold for 102 pure:

http://backpack.tf/profiles/76561198009950989/#!/compare/1456214400/1456473600

Sort by time shows 102 keys obtained in the same trade. For anyone that'd be interested, there's also pure sales for a vivid rubberglove (29 keys) and a ghosts panama (35 keys) in that compare link.

Credits to Foamy the Fearsome for