IMHO It's Murano, dating from the 60/70's. Not sure you'll be able to pin it down to any particular manufacturer though, this style was very popular, as a search on Ebay will probably attest! :wink:
Personally, I've had this 'toffee' colour before, and also a rather fetching big green one, which I was able to wear comfortably as a helmet. :shock: