The only way to find out is by playing the albums.Heat and Humidity, the way records are stored are the big killers.Moldy record covers and moldy on the vinyl another...warping from storing them horizontally can happen. You want to play them to checkout the sound.They can be cleaned my hand ,brush,cleaning fluid.A car can look great but until you drive it who knows.
Records not stored vertically for decades
I’m looking to eventually get my vinyl rig back up n running and went to get my albums and found they’ve been lying flat probably for decades in two stacks of about 75 albums in each stack. Any chance they’re still in good shape, or what damage may have been done versus being stored vertically? They’ve been in a dry, temperature-controlled basement the whole time. No way to play them right now so just hoping they might still be ok. Thanks for thoughts.