Mini.

Sale #1:

https://backpack.tf/profiles/76561198063814565#!/compare/1548374400/1548633600

Bulk.

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Sale #2:

https://backpack.tf/profiles/76561198443489337#!/compare/1548720000/1548806400

Sold for a Sunbeams Frenchman's Beret (36 keys), a Strange Killstreak Sniper Rifle (.46 keys), a Blizzardy Storm Master's Yellow Belt (30 keys), a Strange Festive Axtinguisher (1.05 keys), a Strange Festivized Medi Gun (.15 keys), a Sir Hootsalot (.04 keys), The Cute Suit (.18 keys), a Dead Presidents Brigade Helm (12 keys), and a black The Patriot Peak (.92 keys).

36 + .46 + 30 + 1.05 + .15 + .04 + .18 + 12 + .92 = 80.8 keys

Taking keys at 45.44 ref.

81 keys

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Sale #3:

https://backpack.tf/profiles/76561198443489337#!/compare/1550966400/1551052800

Untracable.

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Sale #4:

https://backpack.tf/profiles/76561198887873596#!/compare/1551225600/1551312000

Untracable.

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Sale #5:

https://backpack.tf/profiles/76561198443489337#!/compare/1552176000/1552953600

Bulk.

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Sale #6:

https://backpack.tf/profiles/76561198083134207#!/compare/1552176000/1552262400

Bought for ~56 keys.

56 keys

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Minis:

Blizzardy Storm Master's Yellow Belt:

https://backpack.tf/profiles/76561198063814565#!/compare/1549756800/1549843200

Sold for 30 keys.

30 keys

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Dead Presidents Brigade Helm:

https://backpack.tf/profiles/76561198063814565#!/compare/1548806400/1548979200

Sold for 12 keys.

12 keys