Resuggestion, thanks to K1ng for the info!

Squad 4, Team No Life!

Mini for Arcana Forge!

Sale 1:

https://backpack.tf/profiles/76561198022460619#!/compare/1429426800/1548806400

https://backpack.tf/profiles/76561198080179568#!/compare/1552780800/1552867200

SCM

Sale 2:

https://backpack.tf/profiles/76561198127938353#!/compare/1548201600/1548288000

https://backpack.tf/profiles/76561198101657879#!/compare/1548201600/1548288000

Sold for Smoking Rack(39)

https://bot.tf/stats/listings/Y5JOKL9Y

B/O of 37 keys, capping

Sale 3:

https://backpack.tf/profiles/76561198101657879#!/compare/1548547200/1548633600

https://backpack.tf/profiles/76561198053747026#!/compare/1548460800/1548547200

Bulk

Sale 4:

https://backpack.tf/profiles/76561198274673432#!/compare/1547856000/1548460800

https://backpack.tf/profiles/76561198067103238#!/compare/1548201600/1548374400

Sold for Cool FN Leopard Shotgun

Use there

Sale 5:

https://backpack.tf/profiles/76561198067103238#!/compare/1548374400/1548460800

https://backpack.tf/profiles/76561198155110999#!/compare/1548374400/1548460800

QS to bot, then moved to owner

Sale 6:

https://backpack.tf/profiles/76561198080179568#!/compare/1548633600/1548720000

https://backpack.tf/profiles/76561198174361109#!/compare/1548288000/1548720000

Sold for 37 keys

https://bot.tf/stats/listings/461J08RY

b/O of 37 keys

Sale 7:

https://backpack.tf/profiles/76561198174361109#!/compare/1549065600/1549238400

https://backpack.tf/profiles/76561198317418604#!/compare/1549152000/1549238400

QS top bot, then moved to owner.

Sale 8:

https://backpack.tf/profiles/76561198115721685#!/compare/1550188800/1550275200

https://backpack.tf/profiles/76561198258915621#!/compare/1550361600/1550534400

Untrace

Sale 9:

https://backpack.tf/profiles/76561198182213262#!/compare/1550793600/1550880000

https://backpack.tf/profiles/76561198258915621#!/compare/1550793600/1550880000

Bulk

Sale 10:

https://backpack.tf/profiles/76561198182213262#!/compare/1551139200/1551312000

https://backpack.tf/profiles/76561198816950768#!/compare/1550966400/1551312000

Sold for 34 keys

Sale 11:

https://marketplace.tf/items/339;5;u36

$56.00 / $1.82 = 30.77 keys

can't prove the Feb 17 sale isn't for a dupe.

Total sales @:

30.77, 34, 37, 37

clean seller for 35,

https://bot.tf/stats/listings/4P5DE0E4

has been at least listed since Feb for higher, than dropped.

https://bot.tf/stats/listings/42KZ635Y

only dropped recently, however.

K1ng's Part:

I see no real reason to exclude 31. It's close to buyers but 37 is also close to/above sellers. 31-37 should be okay.