Monmouth at Maastricht?

The Duke of Monmouth - maybe at Maastricht - interesting cavalry figures in the background. Is there a colour version of this? I think I've seen one. Some of the background people are wearing pots.
An eyewitness described Monmouth at the end of Sedgemoor 'removing his headpiece' (he fought with the infantry with a half-pike in his hand) - I've often wondered whether it was a cavalry pot or classical pikeman's helmet but then that probably makes me a bit weird.