RARE WWII Japanese SK-100 Aerial Camera Outfit #331. Probably manufactured by Konishiroku (later Konica) for Army Air Force use. Comes in the original heavy-duty, fitted wooden case with a full selection of film holders (two types), set of 4 filters, clip-on finder etc. Untested but must be one of the most complete outfits available. Fitted with a Nikon Nippon Kogaku Nikkor 17940mm(?) f4.5 lens #554. All VERY dirty from long-term storage and a VERY heavy outfit!