I saw one at Malcolm Taylor's once. He had one in to refurb, after sorting my Lecia IIIf. He said it was designed by an Englishman, Noel Pemberton-Billing, it was manufactured by Swiss watchmakers, Le Coultre et Cie. This was the ultimate in sophisticated miniaturisation, packing more features into its small body than any other camera of its size. I sneaked a piccy.