I just got my "badge of office" (titled Blade Of The Reach) from Jarl Igmund and went to find a weapon rack in my home to put it on, and it just disappeared.

I know it's a generic leveled magic weapon with a unique name, but does anyone know how to get it back (I was level 30 plus when I first got it) via a console command?

I had a similar situation with one on my "trophy" swords. I thought it had dissapeared also (with great panic), until I noticed that it had fallen out of the weapon rack and was actually lying on the floor beneath the rack. I hope this is also the case for you, and that it's not completely lost.

Beyond that, here's a link to the console commands:
http://elderscrolls.wikia.com/wiki/Console_Commands_(Skyrim