Rare and Early Microscope by C. Kellner's Nachf.: Fr. Bethle in Wetzlar, c. 1859
Signature: "C. Kellner in Wetzlar. Belthle & Rexroth No. 373". Important Leitz precursor with very low serial number!
Estimate: € 2,500/3,500
US$ 3,000/4,200
Reserve: € 1,500/US$ 1,800
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