While moving homes in skyrim I moved into windhelm and brought all of my stuff. But upon placing weapons I noticed that my rusted mace was gone but my mace of molag bal was there. I went to every evidence chest but it wasn't there and back to my markarth and whiterun homes but wasn't there.
How can I find it?

Erm... the Rusted Mace turns into the Mace of Molag Bal.

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Yes but I put the rusted mace on a plaque before killing the priest.

They are one and the same except the rusted version has no spell on it and has less damage. It is normal to have just one.

You killed the priest. That will still cause it to transform. In fact, you need to *fail* the quest, by refusing to kill the preist, in order to keep it as a Rusty Mace.

Console commands? reloading a previous save

That's the thing he's got the mace of molag bal. For some reason he seems to think you're able to have both.

Ive heard about the glitch where you can get both the rusted and mace of molag bal but why would you want the rusted mace?

From the Skyrim WIki about the Mace of Molag Bal (important parts bolded.)

NO people I have both it's just I somehow lost in during the civil war. I killed many people with the mace I know I had it. So back to topic HOW DO I GET IT BACK?!
Yes only this photo works :/ [my avatar]

Use console commands. Or reload an earlier save, unless you know EXACTLY where you last used it at.

Wait I didnt know you could spit in molag's face, how? Oh I mean I didnt know there was a choice in his quest in Skyrim to not kill whos his head.

what?

Please I have xbox I need some way to trace it back HELP!

You're SOL if you can't reload an earlier save from before your move.

It sounds like you made a no-no... by taking both the Rusted Mace AND the Mace of Molag Bal at once. You managed to trick the game from removing the Rusted Mace from your inventory when you were given the Mace of Molag Bal, by keeping the Rusted Mace out of your inventory (and the Abandoned house, on a weapon plaque) before killing the priest.

This means that it uses a script to remove the Rusted Mace when you have the Mace of Molag Bal in your inventory. Since you picked both up, the game re-ran the script. Since you had both, it removed the Rusted Mace from your inventory. That means it's gone from the game. Permanently.

sorry about the lost