My thanks to a contributor who has passed on this superb photo of the Stingray. (Please feel free to pass on any anecodotal evidence or better photos if you have them).
My experience of the Stingray was that it was quite rare at the time. However, ebay as ever provides evidence contrary to this. The Stingray is unchanged, although the side numerals on this example have a black square around them, while the catalogue version is just a numeral only (below).