Interesting..what are your sources for flags 1, 3 and 4?
Rampjaar: Mostly all taken from WI article on 80 years war standards. I also have a few sent from a guy in Holland that i will be adding soon as well.
I have only seen flags 1, 3 and 4 on ONE flag in the Gortter manuscript, not as separate flags. I couldn't find them either on prints in the Dutch National Museum, nor in the Foundry book on the Dutch Republic.