Cinzia Folding Bike

[Robdedob1]

Can anyone tell me what year this bike was made? Also The front light is broken, can anyone recommend where I could possibly buy another original one.
It is a Cinzia Hyda Bike Single Speed Folding Bicycle. Below the seat it says brevetatto and on the handle bars it says guizzardi.

Regards,
Robdedob1

[nfmisso]

I would guess '60s; mid '70s at the latest.