I have one of these bikes and mine is from the ‘50s. As has been noted, they made this machine into the ‘80s with only minor changes kind of like 26” ballon tire cruisers here in the states. iab is very knowledgeable about this stuff so his input has merit.

The only thing I’m not sure about is the clamp style nut on the headset. I would have thought that went away in the….’70s(?) but that is speculation on my part.

No matter, beautiful bike in fabulous condition. I look forward to more pics.