Josef Leiter Ophthalmo Phantome Head, Vienna, Austria, first quarter 20th century, Bakelite "Phantom" head with coil spring eyes with adjustment screws mounted to a steel bracket for tilt adjustment and marked "Leiter in Wien" on hinge, ht. 13 in.
Provenance: Alex Peck Antique Scientifica to a private Massachusetts collector.
Note: A similar example is held by the Science Museum in London.
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