A medium-size model microscope signed on the tube “E. Hartnack & Cie / Place Dauphine, 21 / à Paris”, with serial number “9695” on the case, so circa 1870.
We know by Hartnack’ autographe letter (preserved in a private collection) that Hartnack procuded his microscope number 10000 in July 1871 and we know that his enterred in partnership with Prazmowski in 1865 and they found “Hartnach & Cie” in 1870 so we can date this microscope from the year 1870.
The microscope and its accessories are preserved in their original mahogany case.
The present microscope is the stand IIA in the early Hartnach catalogue (not illustrated) or in the late German Hartnack catalogue or still in the Prawmoski catalogue from the years 1880s’. It is described as
“IIA. Microscope achromatique à platine fixe, mise au foyer par la colonne, avec miroir mobile pour l’éclairage oblique, composé des systèmes objectifs 4, 7, et des oculaires 2 et 4, donnant une série de grossissements de 50, 100, 220 et 450 fois. Loupe d’éclairage pour les corps opaques au prix de 135 [Francs Or]”.
The present example matchs exactly with the catalogue description preserving two objectives 4 and 7 and two eyepieces 2 and 4, and its bull’s eye condenser.
It is in fine and working condition, excepted few oxydations and a little play in the main stand.
The case measures 26,5x13x10 cm.
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Established by Alexandre Piffault in 2014 and based in Paris at 5 rue de Condé, 75006, very close to Odéon, Le Zograscope specializes in antique and rare books in Science, Medicine and Technology, and rare antique instruments in the same fields. We have especially a strong interest in early and continental microscopy, early and special mathematical/drawing instruments, medical and surgical instrument, and rare technology.