The only known *entire* plate of this type is shown below.
It can be classified as a prototype, because no actual plates were ever produced.
1960Jonathan Leib

Another one of the prototype plates survived in the form of an ashtray.
John Willard

Photoshop fun !
This was my original idea of what
the real plate would look like, just
from the ashtray picture.
Pretty cool, eh ?
