Many thanks for the info.
Badura-Skoda apparently turns 90 later this year.
To be released Sept.1,2017, this RCA box of Schubert sonatas, all I believe on concert grand , not fortepiano. I have the RCA single lp from the time pairing D.743 and 959:
This 1956 Westminster lp of the Chopin Etudes is in my collection , does not appear to be in the DGG box (?) :