Actually Otto that's not a Turner GT, that's a Turner Mk2.
barrett's puzzle shows the GT, Turner's attempt to move upmarket and into the 1960s.
It was the only Turner to get that moniker, and only 9 (not 10, I believe) were made between 1962 and 1965, so you could say it was not entirely successful...
Here are a few more pics of the Turner GT: