Nuremberg Cardboard Microscope

wooden "Sentry-Box" type of compound microscope from the Nuremberg region of Germany in very fine condition. It is constructed of a wooden base (possibly oak) with an enclosed single-sided mirror (original, but cracked). Two side cut-outs leave space for sample slides. Attached to the top is a cardboard sleeve with turned wooden ornamental ends. It is covered in tooled shagreen. The microscope body tube fits inside this sleeve. The body is made in two cardboard sections fitted together with turned wooden ornamental rings. It is covered with painted paper, on base signed 'JFF' in heart-shape, hight 21.5cm, lit. PETRI, R. J. "Das Mikroskop", v. Richard Schoetz, Berlin 1896, page 151