18th Oct, 2019 12:00
Fine Photographica & Instruments of Science & Medicine
A Derogy Patent 10" Combination Petzval Brass Lens
1870-80, body, G, elements, VG, some cleaning marks, front optical cell signed in pen 'Derogy a Paris', with cast iron flange; Convertible from a Petzval to an Achromatic landscape lens. Lacking middle cell which enabled it to be used as a close up lens, but functional as it is.
1870-80, body, G, elements, VG, some cleaning marks, front optical cell signed in pen 'Derogy a Paris', with cast iron flange; Convertible from a Petzval to an Achromatic landscape lens. Lacking middle cell which enabled it to be used as a close up lens, but functional as it is.
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Auction: Fine Photographica & Instruments of Science & Medicine, 18th Oct, 2019
