Blizzard numbers items as they are created, so the named items next to ID 138876 (138871 to 138881) were usually added in the same batch as Runas' Crystal Grinder: the same quest line, zone, vendor or reward set.
Ovyd's Winter WrapID 138879 · Armor - Leather · item level 50"The philosopher Ovyd is recounted in history as one of the few Vrykul that spurned the sword, opting instead..."