Eureka. A friend asked me if I knew I could use a picture to google instead of text, I didn't know that. I had a quick look online to find out how to do it, It turns out the photo is of a model built in the Czech Republic. Mr google kindly supplied details of the builder, his club and a link to some drawings, not a lot of information but enough for me to work from.
That takes care of my spare time for at least a year.