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 Wyrmhide Helm is listed as Vendor. Appearance ID: 10689. No other item uses this appearance, so it is unique to Furious Gladiator's Wyrmhide Helm.
Read from the World of Warcraft client build files.
How Furious Gladiator's Wyrmhide Helm Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Furious Gladiator's Wyrmhide Helm suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Similar Items
The 10 items nearest to Furious Gladiator's Wyrmhide Helm (item level 35) in item level among Armor > Leather, Head slot, from item level 32 to 37.
Items Numbered Next to Furious Gladiator's Wyrmhide Helm
Blizzard numbers items as they are created, so the named items next to ID 41327 (41321 to 41333) were usually added in the same batch as Furious Gladiator's Wyrmhide Helm: the same quest line, zone, vendor or reward set.