The files from the 80s floppies have timestamps in 1999, so they were only a bit over ten years old back when I copied them off the floppies.

I did test some of the floppies in later years and still seemed to work. I still have the floppies but no longer have a working 5.25" drive to try them on!

You can try with advanced techniques: https://scarybeastsecurity.blogspot.com/2021/05/recovering-l...