The Fluxus Affair Yacht Club? Or are they the Mail Art Academy fight flags? Serse's postcard is actually of a set of Artistamps. Nice card my friend.
Serse writes a little thank you for the recent 4th Dimension Territories project documentation. I should take a moment here to explain that I have only sent out about 120 of the 155 needed for each artist that participated. So, if you haven't received your copy yet, you shall soon. Thank you Serse for the academy fight flag card. And remember folks, "Fight, fight, fight for Mail Art"!