One must be regarding the Philtown acetate that sold for 8K. Or the Jenges label 45 that was not issued in the 60s and is cited by some soul nazis to be an authentic pressing.
Some of the "legendary" soul guys are involved in scamming fellow collectors with fakes, like Simon Soussan and Ian Levine, both often playing dumb when confronted with evidence to the contrary.
Someone who has made his entire living (or close to it) for decades via booting fake acetates is a guy named Menkin, he seems to be able to con everyone.