1935
March – The German Reichspost (Post Office) begins TV programming with 180-line resolution. The “first television broadcasting service in world”. Pictures were produced on film and then scanned using a rotating disk.
https://youtu.be/jtu5lG4unRc
MZTV Museum of Television (at The ZoomerPlex) 64 Jefferson Avenue Toronto, Ontario, Canada M6K 1Y4