Hi there is also a white/black one styrene, same design as the white/red promo but its white/black promo, black star on the right hand side its got K 10036 scratched in the deadwax not too common but i don't think its an orig, its been around since at least the 80s - this is probably the one you have got, its not listed on discogs or in John Manships bootleg guide, but don't think its an orig.