In Wrath of the Lich King it is item level 200 and requires level 80. In MoP Classic it is item level 200, requires level 80 and sells to vendors for 1c.
In the Appearances collection, Hateful Gladiator's Silk Amice is listed as Vendor. Appearance ID: 10829. No other item uses this appearance, so it is unique to Hateful Gladiator's Silk Amice.
Read from the World of Warcraft client build files.
How Hateful Gladiator's Silk Amice Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Hateful Gladiator's Silk Amice suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Similar Items
The 10 items nearest to Hateful Gladiator's Silk Amice (item level 35) in item level among Armor > Cloth, Shoulder slot, from item level 31 to 38.
Items Numbered Next to Hateful Gladiator's Silk Amice
Blizzard numbers items as they are created, so the named items next to ID 41963 (41957 to 41969) were usually added in the same batch as Hateful Gladiator's Silk Amice: the same quest line, zone, vendor or reward set.