The quality of the acetate itself, which is single-sided, is very good indeed. The sound reproduction is even better - it's loud, crisp and clear, so I doubt that it's been dubbed off another 45.
Having had a look now, I've seen a few images on the web of a similar LTS label design. These though seem to be for contemporary and legitimate 1970s releases. Might this have been mooted for a 're-release', exactly as so many other 60s soul 45s were during the commercial height of the Northern scene in the 70s?