The original Crayford company is still going in the UK and is now called Crayford Specialist Vehicles Ltd,but I don't think they produce convertibles now.Now that most marques produce their own convertible models there isn't a viable market for them anymore.For further pics of the Crayford Mercedes check these out
http://mitglied.lycos.de/albeyer/id47.htm
There was a Crayford wagon on UK Ebay recently in need of restoration,unfortunately I haven't got the space otherwise I'd have been tempted