Ezra Grimm's Postbox Key

Confirmed in gameFrom the beta client, and the game shows the same numbers. They can still change before release. Why Blizzard hides items

Common, Key, Key, item level 1, item 13307. All items

Same as Classic: the tooltip reads the same in both clients.

Classic Era 1.15.9.69722

Ezra Grimm's Postbox Key

Item level 1 · item 13307

Key

Use: Opens a Stratholme postbox.

Forever beta 1.60.1.70374

Ezra Grimm's Postbox Key

Item level 1 · item 13307

Key

Use: Opens a Stratholme postbox.

HiddenDataminedConfirmed in game

Read from the game clients' item tables through wago.tools. Some Forever items are not in those tables: Blizzard's server sends them to the game the first time it meets one, and we read the ones our game has received from its cache. The Forever client's stat amounts, armor and weapon damage are computed from its item level budgets the way the game computes them. Names, icons and item data © Blizzard Entertainment.