Dr. Faustus library

Apropos of nothing, I offer a picture of my collected copies of Thomas Mann's Doctor Faustus, a book that that has had, as the author might have said, an almost uncanny effect on me. The paperback on top was purchased at Second Story Books, in Washington DC, circa 1985. It remains the most intense reading experience of my life. Below that is a 1948 copy that I found on the Internet. It is inscribed by Hans and Hilde Jacobi to their friend Poldi. I wonder if this could be the Hans Jacobi...