Adding the latest (as of 2018) to this thread.
Coker now makes the narrow whitewall
https://www.cokertire.com/tires/styl...whitewall.html
And even more interesting, the Thai's now seem to be replicating the original whitewall AND tread from "Vee Rubber Performance Tires".
http://www.veerubber.co.th/
No use putting an eBay link here because it will be expired for future readers. Trying searching eBay for "HONDA Benly C92 CA92 CB92 CS92 C95 CA95 CB95 F+R Tyre Tire White Wall , 3.00-16"