I have a large windscreen for sale. It will fit a P series Vespa or Genuine Stella. It looks like the one in this link:

http://www.scooterworks.com/cuppini-windscreen--tall----vespa-p-px--stella-products-12229.php

Howver the trim around the edge is chrome colored (I think it's actually the chrome colored plastic trim).
It's in great shape. It came with my Stella when I bought it used (with 800 miles). I took it off and have never used it.
I am asking $100 obo + shipping.

Thanks