For those who wish to know more about Perspecta Stereophonic Sound, there is a new thread here:
https://www.hometheaterforum.com/community/threads/facts-about-perspecta-stereophonic-sound.370700/
The late Bob Eberenz and I (he worked with Bob Fine to develop the process in 1954) met with the head of Paramount archives in the late 90s and they had all of their Perspecta 35mm track negatives at that time. I doubt they have been junked since then, I believe this is just a case of the...
People that dismiss Perspecta Stereophonic Sound ("it's just panned mono") have never heard it properly.
C. Robert Fine at Fine Recording was an audio genius (Mercury Living Presence) and with the use of creative panning AND discrete gain control judiciously applied at varying levels to the...