I have just visited my parents and whilst I was there I picked up a camera which was my first SLR.
It is an Edixa Prismaflex with its original Edixa-Auto-Cassaron 50mm, f2.8 lens.
It also came with a 35mm non auto stop down lens.
Lens mount is 42mm and shutter speeds go from 1/30 to 1/500.
About 25 years ago my father handed it to me in a box and said "here, do you want this?"
It hasn't had a film through it for about 18 years but it all seems to work correctly so I intend to try it out soon.