I picked up four boxes of records recently, went through them all and came across 11 titles that struck me as unusual and potentially valuable collectables. Every record appears to have been unplayed. I know absolutely nothing about classical so I may be wrong about this stuff. I made up an excel sheet with every piece of information listed on the record covers, if there are some knowledgable folks out there willing to take a look at my short list, please email me and I'll send you the file. Your opinion is bound to be far more enlightening than mine.