Even brand new records-LPs/7"/12" singles have a so-called mold/mould release agent which mars the sound reproduction, I am informed
NB: strictly speaking older 2nd-hand records should be professionally cleaned eg Keith Monks etc machines. For that try a Linn Sondek LP12 etc dealer who normally has such gear.
Ditto new CDs which work much better with a good clean.
Recommended. marks out of 10: 10/10.