


Jan Mertens describes a 1968 brochure flag as blue, with a large white diamond whose left and right points touch the flag edges. The diamond bears blue sans-serif “HIL”; thin white horizontal stripes lie near the upper and lower edges.
Ivan Sache’s FOTW illustration derives from the second brochure, with the diamond contained within the field. Rosanoski initially confused the two brochure versions and corrected his account the following day.