The catalog of the Billings Microscope Collecton of the Medical Museum of the Armed Forces Institute of Pathology (Washington, 1974) attributes the manufacture of this miniature drum type microscope to the  French maker Bertrand, Paris and dates it at about 1839. However, it is not at all clear if the attribution or dating is correct. It is possible that this form of microscope was made over an extended period of time. In fact, a similar microscope was offered in the 1922 Catalogue Société des Lunetiers as show below: