Be sure NOT to play stereo LP's with a MONO cartridge. It will damage the LP. Playing mono LP's with a stereo cartridge is not a problem, damage wise.
As to the OP question, there is no definite answer. The original mono recording in theory should be the best, BUT sometimes the reprocessed (especially on a reissue) for stereo may sound better. I don't know of any sure way to know which would be best, although one would hope that the original, if recorded in mono would sound the best, especially with a mono cartridge.
Good listening
As to the OP question, there is no definite answer. The original mono recording in theory should be the best, BUT sometimes the reprocessed (especially on a reissue) for stereo may sound better. I don't know of any sure way to know which would be best, although one would hope that the original, if recorded in mono would sound the best, especially with a mono cartridge.
Good listening