Fair game here.

Sales

Sale 1: Sold for 9 keys

https://backpack.tf/profiles/76561198192602363#!/compare/1601856000/1602028800

https://backpack.tf/profiles/76561198119692259#!/compare/1567123200/1602028800

Sale 2: Sold for 7 keys?

https://backpack.tf/profiles/76561198154552555#!/compare/1597449600/1597536000

https://backpack.tf/profiles/76561198401975050#!/compare/1597363200/1597449600

Histories dont match though, and no buyouts available.

Other exchanges with scrap, mannco, mptf, and bot alt.

https://backpack.tf/item/6261140316

https://backpack.tf/item/7463641254

Marketplace sales

https://marketplace.tf/items/tf2/30351;5;u7

July

19.99 on July 29 (19.99/1.92 = 10~)

https://manic.tf/keyprice/?at=2020-07-29

Marketplace sellers

https://marketplace.tf/items/tf2/30351;5;u7

https://gyazo.com/af5113b0dc114e61f94f727727ddab58

$18.99/1.88 = 10~

Current Classifieds

https://backpack.tf/classifieds?item=Teutonic%20Toque&quality=5&tradable=1&craftable=1&australium=-1&particle=7&killstreak_tier=0

https://gyazo.com/172dd5cdf08ec6cfddd0df1d913cbfd3

Summary

Sales at 7 (possibly) and 9.

Marketplace sales at 10.

Marketplace seller at 10 as well.

Conclusion

7 is not confirmed, and below buyers anyways.

Going with 9-10 here.

Take it easy.