Yes, that makes sense and confirms my suspicions. I guess the same thing rules out much likelyhood of there being any depictions of the siege/bombardment of Antwerp either.
But there is the one image that is reproduced in Haythornthwaite's book, if only I could find where that came from. It isn't brilliant, but it looks like it's that or nothing.

The reason that I need this, BTW, is because I am developing my research on Graham's army into a book, and, as I say, the first thing that I need to provide is something pretty to go on the cover...