First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
Related
Sin-Steeped Coronet Game Data
Appearance
In the Appearances collection, Sin-Steeped Coronet is listed as Boss Drop. Appearance IDs: 56309, 56275, 56293, 56284. 1 other item wears the same appearance:
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Sin-Steeped Coronet Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Sin-Steeped Coronet suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Transmog Sets
Sin-Steeped Coronet is part of the transmog set Mercurial Punisher's Painweave (Demon Hunter only), which the Appearances collection lists in 4 versions. The other 15 pieces:
Blizzard numbers items as they are created, so the named items next to ID 189783 (189777 to 189788) were usually added in the same batch as Sin-Steeped Coronet: the same quest line, zone, vendor or reward set.