This is a Heidoscop second version made from 1925 to 1927, still in mint condition, offered to sell by the Köln Auction Team last September, it has the original box and original brochures: http://tinyurl.com/23e3yq4 It is provided with two CZJ Tessar 4,5/7,5cm taking lenses and a CZJ Triplet 4,2/7,5cm finder lens. It has interchangeable magazines for 12 6x13 plates to take six 6x6 stereo pairs (65mm stereo separation)with automatic changing chuter, or magazines for one plate only or for film packs and for 120 film. It uses a leaf stereo shutter, Heidecke's design, timed by air bracket 1sec to 1/300th sec. Carlos --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list