Grievous Gladiator's Silk Cowl is part of the transmog set Grievous Gladiator's Silk Armor (Mage only), which the Appearances collection lists in 2 versions. The other 6 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Grievous Gladiator's Silk Cowl Fits
Other Items Named Grievous Gladiator's Silk Cowl
4 other items in the current build are also called Grievous Gladiator's Silk Cowl. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Grievous Gladiator's Silk Cowl
Blizzard numbers items as they are created, so the named items next to ID 100331 (100326 to 100336) were usually added in the same batch as Grievous Gladiator's Silk Cowl: the same quest line, zone, vendor or reward set.