In Wrath of the Lich King it is item level 258, requires level 80 and sells to vendors for 9g 79s 39c. In MoP Classic it is item level 232, requires level 80 and sells to vendors for 9g 79s 39c.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Dragonstalker's Helmet Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Dragonstalker's Helmet suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Similar Items
The 10 items nearest to Dragonstalker's Helmet (item level 35) in item level among Armor > Mail, Head slot, from item level 32 to 37.
Blizzard numbers items as they are created, so the named items next to ID 49319 (49314 to 49324) were usually added in the same batch as Dragonstalker's Helmet: the same quest line, zone, vendor or reward set.