The symbol type was introduced with the 74 model year updates, flat top wings, Griffin on the rear panel etc. I suppose it made it more export friendly, after all we had just entered the European Common Market.
There was an earlier type, the one fitted to the square vent dash model which is a bit more grey/silver. Also the basic Delux model did not have a Temp gauge as standard until the 72 model year.
Editor of the VVOC Magazine ReVival
"When you have a Firenza like mine, who needs any Minis?" copyright David Maxwell 1979.