My friend has one of these! It was made in Italy by Aramachi. Some models are worth a bundle and some are not.
Here is where to look it up on NADA. http://www.nadaguides.com/default.aspx?LI=1-23-38-5692-0-0-0&l=1&w=23&p=38&f=5694&gc=AM>c=MC&m=0026&y=1972&ml=H
This was also sold in Italy under the Aramachi name. There are groups in the US and Europe so you should be able to find riders of similar units to chat with. Thanks for the question, I love vintage bikes.