In 1949, Columbia was still mastering on lacquer discs. Is what you have a test pressing or a lacquer reference? The latter could be turned around easily from Thursday to Tuesday, whereas the time frame you give for the former seems brief, although arrangements for extraordinary circumstances could have made it possible. DDR On Sun, Oct 29, 2017 at 10:04 AM, Jay Bruder <[log in to unmask]> wrote: > Does anyone know how long it took to turn an original recording into a test > pressing in the late 1940s? How long did each plating stage take? We are > trying to assess the validity of a recording session date reported to have > been held in Columbus on Thursday January 27, 1949 and a test pressing > -presumably for Savoy in Newark- inspected the next Tuesday, February 1, > 1949. > > Jay Bruder > -- 1006 Langer Way Delray Beach, FL 33483 561.265.2976