It looks real from the things I can see.
I cant tell if there are nibs, and I'd like to see the front of the head stock as well.
The serial font was primarily used for early classics, but I've seen a few customs with that same font. The weird thing is the serial number itself.
The 1 by itself would seem to indicate a reissue, but I cant think of any 1 years a reissue would be warranted.
the guy ad:
Gibson Les Paul Custom.
Early 94 Custom Shop Model made for promotion
Back of headstock stamped ‘promotion – not for resale’
9 ¼ pounds
Looks like a relic, plays like a dream
Worn gold hardware
Complete with hardcase
To me, looks like what we call a 'pre-historic', in other words, an early attempt by Gibson (before they openend the customshop and started mass producing historics) at reproducing the Les Pauls from the 1950's. The '1' means its from 1991.