There are others, such as the German "Trott" helmets from the 70s. Plastic
with webbing inside.
Angel Garcia
Long Valley NJ
snip:
Gosh, wouldn't the only on-topic helmets be of the leather "hair-net"
variety or perhaps those solid Bell items from the first generation of
fiberglass lids for cyclists?
George Albaugh
Bowie, Maryland USA