Credits to Aubreon https://backpack.tf/suggestion/6179fa11a1c2647b6529fb56

Sales

Item History 1: https://backpack.tf/item/8424959552

Sale 1 of 4:

https://backpack.tf/profiles/76561198841279602#!/compare/1631664000/1631750400

https://backpack.tf/profiles/76561199111073161#!/compare/1631664000/1631750400

Unknown

Sale 2 of 4:

https://backpack.tf/profiles/76561199111073161#!/compare/1632182400/1632268800

https://backpack.tf/profiles/76561198850121720#!/compare/1632182400/1632268800

Unknown

Sale 3 of 4 (excluded):

https://backpack.tf/profiles/76561198850121720#!/compare/1633910400/1633996800

https://backpack.tf/profiles/76561198079592999#!/compare/1633824000/1634083200

Traded alongside Sunbeams Warhood (mini @ 52 keys) + 28 keys for C9 Crone's Dome (mini @ 138 keys)

The mini of the Warhood is based only upon current buy orders, which would unjustly suggest the Samur-Eye as being valued at 58 keys.

Sale 4 of 4:

https://backpack.tf/profiles/76561198079592999#!/compare/1633824000/1634083200

https://backpack.tf/profiles/76561199084784906#!/compare/1633996800/1634083200

Unknown

Item History 2: https://backpack.tf/item/1474445334

Sale 1 of 1:

https://backpack.tf/profiles/76561198453530349#!/compare/1634083200/1634169600

https://backpack.tf/profiles/76561198017281140#!/compare/1634083200/1634169600

https://gladiator.tf/sales?item=Circling%20Heart%20Samur-Eye&at=2021-11-07T20:51:33.909Z

Sold for 33 keys (appears to be the same trade detected by gladiator.tf)

Item History 3: https://backpack.tf/item/1119899918

Sale 1 of 1:

https://backpack.tf/profiles/76561199102407070#!/compare/1634083200/1634342400

https://backpack.tf/profiles/76561198045723808#!/compare/1633305600/1634342400

Unknown

New sale:

https://backpack.tf/profiles/76561199084784906#!/compare/1636329600/1636416000

https://backpack.tf/profiles/76561198138711211#!/compare/1636329600/1636416000

https://gladiator.tf/listings/6189d8174b5abab8bace7bbe

Only 10 keys match, snapshot also suggests ~33 keys

33 flat.