Ontoscope no. 3699
Cornu, Paris; 6 x 13cm., metal-body, with a pair of Voigtländer Heliar f/4.5 85mm. lenses nos. 249093 and 249094
Ontoscope no. 3699
Cornu, Paris; 6 x 13cm., metal-body, with a pair of Voigtländer Heliar f/4.5 85mm. lenses nos. 249093 and 249094
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