»Heidoscop 45 x 107«, 1925
Franke & Heidecke, Braunschweig. Second model. With "Tessar 4,5/5,5 cm" and searching lens "Triplet 3,2/5,5 cm".
Estimate: € 300/400
US$ 360/480
Reserve: € 200/US$ 240