This item is acquired in-game. See its sources below.
Not sold on the Auction House·Weapon
Heirloom: scales with your level. Vendor: Estelle Gendry, Zone: Orgrimmar - Gates of Orgrimmar, Vendor: Krom Stoutarm, Zone: Ironforge - Hall of Explorerscollections
A Heirloom Dagger One-Hand, item level 1, binds when picked up.
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Balanced Heartseeker Fits
Other Items Named Balanced Heartseeker
1 other item in the current build is also called Balanced Heartseeker. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Blizzard numbers items as they are created, so the named items next to ID 122350 (122345 to 122355) were usually added in the same batch as Balanced Heartseeker: the same quest line, zone, vendor or reward set.