Formule anachromatique. L. de Pulligny & C. Puyo’ + 2 additional lens cells & waterhouse stops. This lens is in truly superb condition with beautiful brass and fine engraving. ‘?61885 list has: Casket set as Petzval in mount with 6 achromatic cells to exchange. This gives foci 5.5-17.5in, singly or 2-9in in pairs. These screw in to a Petzval tube…Objectif d’Artiste e.g. f11 8.0in in brass.’. a lens collector’s vade mecum
