[Kongo-Otto]

Originally Posted by ICDP

An Image is available here. If you look at the cowling you can see some white stenciling, it should read DTD 100 OCT. It was painted here to remind ground crew what fuel to use.

http://www.flickr.com/photos/8270787@N07/4871667320/

The stenciling at the cowling, was not about Fuel Grade, as you can see at this Picture from the same aircraft.
The stenciling at the cowling is to read "Dirty Dick"



And for your special interest, a later Spitfire with the same Squadron Code AZ-H AD203 was also shot down over France, as you can see in the Pics below.