Dear Richard, Bob and Marcus
My Friend Bryan, who worked for International Sales, says that while it was Heinkel only two were made, one in the London and one in Dundalk. It is said that the Trojan convertible shown at the 1962 show was the UK built Heinkel with a Trojan badge on, and that no Trojan convertibles were ever officially made. That is not to say somebody may have done a chop on a later one after they rolled it.
Chris Thomas