There were a whole gaggle of very original looking bootlegs in the 1970s, Selecta Disc used to sell them. Johnny Sayles, Younghearts, Hesitations, Barbara Mills, Duke Browner plus whole lot more. Tough te tell from originals but there was always some giveaway like the St Lawrence without the address, Younghearts with wrong matrix number, Barbara Mills wrong size of font. Monarch did a load (styrene) plus another pressing plant did the vinyl ones. They're on kind of on a renaissance now as it's difficult to visually see difference between them and the originals and new pop-DJs buy them with abandonment.