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Soft-Focus (Petzval-Type) Portrait Lens by Va...
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Landscape Lens by Dubroni à Paris, c. 1865...
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"Photographe à Verres Combinés" by Charles Ch...
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Convertible Rectilinéaire Grandangulaire "No....
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"Verax" Anastigmat Symétrique F:6,8 F=300 mm ...
