A 1953 mono three-record box set of Milstein playing solo Bach in mint condition. I bought it for a dollar at a thrift store and sold it years later on eBay for $461.00. A friend, now again, years later, recently sold the identical set on eBay for $750.00.
I imagine that some of my original 50s jazz recordings would be worth a lot these days, especially the early Blue Notes. That, however, will be up to my heirs to discover, as I have no intention of selling them at this point in my late life. .
Frank