Really awesome video! I love Yashica cameras, and I own three (FR1 which belonged to my father, a yashica Minister D, and a Yashica Mat-124) This is one I've never heard of, so I was very interested to hear about it
I inherited my Yashica J from my late Uncle -- Oddly, I put the camera in one of my camera bags 30 years ago! The camera has always been in its leather case - so it is absolutely spotless! I just put in a roll of Ilford HP5 400 ASA into the camera after having the shutter serviced -- arguably the first photos it has taken in over 50 years! Fingers crossed!
