I found the original discussion here.
http://thecabe.com/vbulletin/showthr...or-Sale/page2&
They say pre 1933, and with metal clad wheels that sounds about right. Metal clad were typical from the teens to 20's. Some earlier, and as usual a few places used them later.
Sadly the pictures were gone. They talk about it having a tank (Not a real one, just a decorative one to make it look more like a motorcycle and leave a place for maybe a battery and lights or a horn on fancier models. )
Steve B