This is a safety lamp manufactured by the Friemann and Wolf Company of Zwickau, Germany in the late 19th century. The Friemann and Wolf Company was a prominent lamp manufacturer that exported their lamps to the U.S. until World War I, when buying German products became unpopular. This lamp is one of the most popular Wolf designs, employing a glass enclosure, wire gauze on the top-interior, and a metal bonnet exterior to protect the flame. The lamp is inscribed with the number “250” in two places.
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