I just happily bought an old folding bike at a neighborhood sale. It's single speed, 20", dual brakes, generator lights, Italian, vintage. Front tire marked Pirelli, headset marked Guizzardi.
Slight variations were reportedly sold under several names
including Cinzia, Hyda-Bike, Barbarellas, Safari, Bianchi.
This particular model was custom built for "K.T.C. in Alsip" and most closely resembles a 1969 Cinzia Elite
I rode it home and it felt mostly great. Needs just a little love. I'll probably remove the electricals, and maybe the rusty chainguard, and the back brake cable is seized, and may replace the seat, and add a new front light and rear reflector, and oil, and straighten the pedals, and measure it for a carrying case...
Was originally created here, but now mirrored from personal primary and subject to drift.