Just stumbled across this Skeletor Belt Buckle on ebay.
Did a quick search and couldn't find anything already posted about it.
The description says it officially licensed, presumably part of the 30th Anniversary licensing.
MOTUC NA Most Wanted: Darius, Kayo, Vizar, Hoove, Lizorr
Trade my Red Stone He-Ro Staff for a Green one
HE-MAN UK Adventure Magazine #26