Item 1: https://backpack.tf/item/16067608891

Sale 1:

https://backpack.tf/profiles/76561199192607141#!/compare/1779062400/1779148800

https://backpack.tf/profiles/76561199099521803#!/compare/1779062400/1779148800

Bot to bot owner

Sale 2:

https://backpack.tf/profiles/76561199099521803#!/compare/1779062400/1779148800

https://backpack.tf/profiles/76561198116945752#!/compare/1778976000/1779926400

Untrace, wouldn't be surprised if it sold on Mannco.Store

Item 2: https://backpack.tf/item/16061410052

Sale 3:

https://backpack.tf/profiles/76561198064275957#!/compare/1784592000/1785110400

https://backpack.tf/profiles/76561198692026460#!/compare/1785110400/1785196800

Untrace/Bulk

Sale 4:

https://backpack.tf/profiles/76561198692026460#!/compare/1785110400/1785196800

https://backpack.tf/profiles/76561198032176942#!/compare/1785024000/1785110400

Bulk/backpack purchase then listed on MPTF

Item 3: https://backpack.tf/item/15329159304

Sale 5:

https://backpack.tf/profiles/76561199564942025#!/compare/1780185600/1780272000

https://backpack.tf/profiles/76561198117597416#!/compare/1779494400/1780531200

Sold alongside 4.55 ref for 8 keys (~8 keys)

Item 4: https://backpack.tf/item/14888820402

Bot owner likely sold it on Mannco.Store, not usable

Sales:

8

Sellers and buyers:

BPTF - https://imgur.com/WCkCXoB Sellers at 13.22 keys (13 days) and 20 keys (12 months), buyers up to 3 keys

MPTF - https://marketplace.tf/items/tf2/31292;5;u3200 $23.9 (~12.5 keys)

STN - https://stntrading.eu/item/tf2/Unusual+Lost+Signal+Taunt%3A+Shanty+Shipmate Buy order at ~7 keys

SCM - https://steamcommunity.com/market/listings/440/Unusual%20Taunt%3A%20Shanty%20Shipmate?appid=440&q=Lost+Signal https://imgur.com/fMZxz6b No sellers, buy order at 5.44€ (~2.75 keys)

Going with 8 keys