Re-suggesting without 25 in the range.

http://backpack.tf/item/557089776

Sale 1) Sold + 1 Key for an Infernal Smoke Soldier's Requiem (36.5 Keys)

http://backpack.tf/profiles/76561198156585015#!/compare/1481155200/1481241600

http://www.tf2outpost.com/trade/28637906 - Capped by the Buyout of 35 Keys

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Sale 2) Sold for a Professional Killstreak Australium Knife (~28 Keys) + Strange Professional Killsteak Half-Zatoichi (~3 Keys)

http://backpack.tf/profiles/76561198150783829#!/compare/1485561600/1485648000

28 + 3 = 31 Keys

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Sale 3) Sold for a Scorching Flames Cyborg Stunt Helmet

http://backpack.tf/profiles/76561198052327314#!/compare/1485561600/1485734400

Fits in the range.

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Sale 4) Sold for a Duped Orbiting Fire Bonk Boy + 1 Key

http://backpack.tf/profiles/76561198115721685#!/compare/1485820800/1485907200

http://www.tf2outpost.com/trade/28753257 - Either capped by the Buyout of 34 Keys or fits in the range.