I just bought a NOS windshield for my F1b from this seller on ebay.
Then he posted another:
http://www.ebay.com/itm/Parabrezza-Wind ... 3a951208e9I don't know how many he has, but new original F1 windshields are pretty rare. I am hoping that it come in good condition with no damage. Shipping from Italy can be a little bit of a gamble.