comments:
vemmahouxbois posted on r/cinematography1w
I did some poking around similar places to you. One forum post led me to someone saying the details of the gear are in this book and another post claimed: > Tronchet-Scope system uses a 35mm anamorphic attachment from the 50s. Would you know what one it is? Franscope? Totalvision? And this one posted in your (?) cinematography.com post matches that manufacture date.