I have an original windscreen frame including the 2 side supports, from a 1962 Ruddspeed Ace. There is no glass. The bottom bar was rechromed about 10 years ago and its been hanging in my garage since. It was not used as I managed to buy the last spare original available from Brasscraft. This will not fit AC or Bristol engine cars as the Ruddspeed was slightly wider. The frame measures 14 3/4" (375mm) deep at centre and is 52" (1320mm) wide at base measured straight not around the curve. This will also fit very early Cobras.
Email me at rod@allsworth.net for pictures.
Thanks
Rod