What was the first miracle attributed to Saint Frassati's intercession?

Although many miracles may perhaps be attributed to the intercession of Saint Frassati, the Church officially recognized the healing of Domenico Sellan in 1933. At the time, Domenico was 40 years old and suffering from a tubercular disease of the spine, paralyzed and nearing death. A priest visited him on December 28, 1933, and brought him a small prayer card of Pier Giorgio (whose cause for canonization was opened soon after his death.) Domenico was miraculously cured and lived another 35 years.

It wasn't until 1989 that the documentation of this miracle received final approval (specifically, a declaration of finding of rapid, instantaneous, and permanent healing of Domenico Sellan, born 1892, from Pott’s disease of the first and second lumbar vertebrae with paraplegia on December 28, 1933 at San Quirino, Pordenone.) Pier Giorgio Frassati was declared "Blessed" the following year on May 20, 1990. Saint Pier Giorgio Frassati...pray for us!