Photo courtesy of "rts boink"
who published it on Flickr. He wrote to me:
Among the things I collect are mililtary and medical patches
This blog is dedicated to the Star of David, its history, its various meanings and usages in different cultures. It includes thousands of pictures of Star of David, six-pointed stars, hexagrams, Solomon's Seals, Magen Davids and yellow badges,and served as a resource for three books and four art exhibitions.