Sale 1:

Sold for 10 keys + ~1 key in metal (IDs match)

Seller: https://backpack.tf/profiles/76561198337734785#!/compare/1580169600/1580256000

Buyer: https://backpack.tf/profiles/76561198240442552#!/compare/1580083200/1580256000

https://backpack.tf/item/2206628029

Near ID: 8463191715

11 keys

Sale 2:

Sold with cheap cosmetic for 9 keys

Seller: https://backpack.tf/profiles/76561198240442552#!/compare/1582934400/1583020800

Buyer: https://backpack.tf/profiles/76561198167383619#!/compare/1582934400/1583020800

https://backpack.tf/item/2206628029

9 keys

Marketplace Sales:

https://marketplace.tf/items/tf2/644;5;u60

$19.44, March 13th

https://backpack.tf/item/2206628029 - No Snapshots available

https://manic.tf/keyprice/?at=2020-03-13&price=19.44 - $19.44 / $1.72 = 11.30 keys

Rounds to 11 keys

Other Sales:

https://backpack.tf/item/2206628029 (#1-3)

https://backpack.tf/item/7957667410 - some site bot

#1

Untraceable

https://backpack.tf/profiles/76561198167383619#!/compare/1583020800/1583107200

https://backpack.tf/profiles/76561198097921285#!/compare/1567209600/1583020800

#2

Bulk for Terror-Watt Flamenco

https://backpack.tf/profiles/76561198097921285#!/compare/1583280000/1583625600

https://backpack.tf/profiles/76561198972294135#!/compare/1583539200/1583625600

#3

Untraceable

https://backpack.tf/profiles/76561198972294135#!/compare/1583539200/1583625600

https://backpack.tf/profiles/76561198363395191#!/compare/1583539200/1583625600

Sales at:

9

11 (2x)

https://i.imgur.com/srsECpW.png - Buyers at 9+, excluding 9.

Taking 11 flat.