The creator has passed.
http://www.motociclismo.it/la-morte-di-luciano-marabese-morto-a-68-anni-il-designer-moto-guzzi-gilera-piaggio-66470
http://archivio.animaguzzista.com/maestri/marabese/marabese.htm
That is so terrific, Mike! Thank you so much for posting this! I tried to find the images not long ago to repair another thread and could not find them on the vast web.
(Let us see if we can post the hi-res images in Fileshare. I'm not sure the logistics of that, but will pm you since the image size may require hosting.)