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Petzval-Type Lens by "Lerebours et Secretan",...
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Alexis Millet Landscape Lens for J. Duboscq, ...
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Darlot Lens for Dubroni Cameras, c. 1865...
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Darlot "Hémisphèrique" Wide-Angle Lens, c. 18...
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"Hémisphèrique" Wide-Angle Lens by Darlot, c....
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Objectif Double à Cône Centralisateur (Darlot...
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Rare Wide-Angle "Hémisphèrique" Convertible L...
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"Objectif Universel" Convertible Lens by Darl...
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"Objectif Universel" Convertible Lens by Darl...
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"Hémisphèrique-Rapide" by Darlot, c. 1866...
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Unmarked Petzval-Type Lens with Rims Engraved...
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Tele Objectif Panorthoscopique by Clément & G...
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Petzval-Type Lens by "Derogy Opticien Succr d...
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"Derogy's Patent VR" Petzval-Type Lens, 1858 ...
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Derogy's Convertible Universal Lens, c. 1860...
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Rectilinear-Type Lens in Prosch Triplex Shutt...
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Landscape-Type Lens Probably from America, c....
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Petzval-Type Portrait Lens by J. Vogel, USA, ...
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A. Grubbs Patent Aplanatic Landscape Lens, No...
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C. Grubbs Patent Aplanatic Landscape Lens, c....
