In Wrath of the Lich King it is item level 238 and requires level 80. In MoP Classic it is item level 238, requires level 80 and sells to vendors for 1c.
In the Appearances collection, Furious Gladiator's Silk Cowl is listed as Vendor. Appearance ID: 10817. No other item uses this appearance, so it is unique to Furious Gladiator's Silk Cowl.
Read from the World of Warcraft client build files.
How Furious Gladiator's Silk Cowl Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Furious Gladiator's Silk Cowl suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Similar Items
The 10 items nearest to Furious Gladiator's Silk Cowl (item level 35) in item level among Armor > Cloth, Head slot, from item level 32 to 38.
Items Numbered Next to Furious Gladiator's Silk Cowl
Blizzard numbers items as they are created, so the named items next to ID 41946 (41940 to 41953) were usually added in the same batch as Furious Gladiator's Silk Cowl: the same quest line, zone, vendor or reward set.