The 1980 PHSNE (Photographic Historical Society of New England) show in Boston featured a number of unusual items for the collector. I encountered a tiny Voigtländer folding camera equipped with a horizontally mounted range- finder. The rangefinder was mounted inside a beautifully built wood enclosure marked VIRTUS. Upon inspection the wood parts came apart revealing a Leitz FOKOS rangefinder. With the mount- ing foot the nomenclature is HFOOK. I had NEVER seen this before. It appears that Voigtländer obtained the FOKOS, hid it in the wood box, and marketed the combination camera/rangefinder. Can anyone enlighten us further? The illustrations show the FOKOS hidden and revealed.