This website has a picture of six Universal monster buttons that look very different from those above:
It's possible these were sold as a set through (Ferry's mag) then . .
Those look to just be bootlegs of the Aurora and SPP art (with the Creature being the photoshop job of the SPP art used on the wallets sold in the Ferry resurrected run of Famous Monsters).
They look to be repaints by some hack artist.
But what is SPP?