517 mace weapon items
The Forever catalog holds 517 mace weapon items, topping out at item level 22 with Wooden Maul, Black Malice, Blackrock Mace. Every weapon in the Forever catalog, from the vanilla dungeon and raid drops to the new Forever additions, sorted by item level with daggers, swords, staves, polearms, bows, guns, and wands as filters.
Source: World of Warcraft: Forever game data and Blizzard's Game Data API. Updated with each game build.