Credits to Scourge, Shufflespy, Xergoyf, D. Alex

Sale 1:

https://backpack.tf/profiles/76561198179707937#!/compare/1588291200/1588377600

https://backpack.tf/profiles/76561198985910282#!/compare/1588291200/1588377600

Sold for 20 keys

sale 2:

https://backpack.tf/profiles/76561198115699456#!/compare/1585958400/1586044800

https://backpack.tf/profiles/76561198267189538#!/compare/1585958400/1586044800

QS

sale 3:

https://backpack.tf/profiles/76561198267189538#!/compare/1585958400/1586044800

https://backpack.tf/profiles/76561198985910282#!/compare/1585958400/1586044800

Sold for ~14 keys, 18 ref (QS)

sale 4:

https://backpack.tf/profiles/76561198985910282#!/compare/1586563200/1586649600

https://backpack.tf/profiles/76561198026066876#!/compare/1586476800/1586563200

Sold for HG Beanie + 3 keys

https://bot.tf/stats/listings/MVQP6OP2

B/O of ~16 keys, easily caps by buyers.

sale 5:

https://backpack.tf/profiles/76561198026066876#!/compare/1586563200/1586649600

https://backpack.tf/profiles/76561198114635132#!/compare/1586649600/1586736000

Sold for HG Fez + 1 key

https://bot.tf/stats/listings/Y3WGJ0L0

B/O of 25 keys

Sale 6:

https://backpack.tf/profiles/76561198114635132#!/compare/1586649600/1586736000

https://backpack.tf/profiles/76561197995983788#!/compare/1586649600/1586736000

Untrace

sale 7:

https://backpack.tf/profiles/76561197995983788#!/compare/1586736000/1586822400

https://backpack.tf/profiles/76561198170190173#!/compare/1586736000/1586822400

Untrace

sale 8:

https://backpack.tf/profiles/76561198170190173#!/compare/1588464000/1588550400

https://backpack.tf/profiles/76561198337734785#!/compare/1588464000/1588550400

Sold for 15 keys

sale 9:

https://backpack.tf/profiles/76561198192602363#!/compare/1588377600/1588464000

https://backpack.tf/profiles/76561198337734785#!/compare/1588291200/1588377600

Untrace / QS

sale 10:

https://backpack.tf/profiles/76561198317418604#!/compare/1588291200/1588377600

https://backpack.tf/profiles/76561198179707937#!/compare/1588291200/1588377600

Transfer

sale 11:

https://backpack.tf/profiles/76561198179707937#!/compare/1588291200/1588377600

https://backpack.tf/profiles/76561198305494036#!/compare/1588291200/1588377600

sold for ~20 keys

sale 12:

https://backpack.tf/profiles/76561198305494036#!/compare/1588896000/1588982400

https://backpack.tf/profiles/76561198137566942#!/compare/1588982400/1589068800

Keys

sale 13:

https://backpack.tf/profiles/76561198137566942#!/compare/1588982400/1589068800

https://backpack.tf/profiles/76561198405558674#!/compare/1589068800/1589241600

Sold with 1 key for C9 Barnstormer

likely to end up under buyers, use there

Sale 14:

https://marketplace.tf/items/tf2/250;5;u61

$39.99 / $1.78 = 22.47 keys <--- https://backpack.tf/item/7957211581

$42 / $2.03 = 20.69 keys <--- https://backpack.tf/item/3530654172 - ~18 keys b/o https://cdn.discordapp.com/attachments/298073323219320834/727399544253579324/chief.PNG

Sale 16:

https://backpack.tf/profiles/76561198337734785#!/compare/1586304000/1586390400

https://backpack.tf/profiles/76561198119505019#!/compare/1586304000/1586390400

Untrace

sale 17:

https://backpack.tf/profiles/76561198122096342#!/compare/1585440000/1588377600

https://backpack.tf/profiles/76561198317418604#!/compare/1588291200/1588377600

Sold for 21 keys(?)

sale 18:

https://backpack.tf/profiles/76561198317418604#!/compare/1588291200/1588377600

https://backpack.tf/profiles/76561198447257724#!/compare/1588291200/1588377600

Untrace

sale 19:

https://backpack.tf/profiles/76561198447257724#!/compare/1589846400/1589932800

https://backpack.tf/profiles/76561198217117236#!/compare/1589932800/1589932800

Keys, at least 10.

Sale 20:

https://backpack.tf/profiles/76561198217117236#!/compare/1589932800/1589932800

https://backpack.tf/profiles/76561198026315945#!/compare/1591574400/1591747200

Untrace

Total sales @:

15, 16, 16, 18, 20, 20, 21, 21, 22 keys

Going with 15-18 keys. Unsold for bellow 20 keys for more than a month https://bot.tf/stats/listings/4R0OP669