The lamp appears to be bronze, and it has interesting details on the column or stem. It could stand a good cleaning perhaps. It is 24 inches high from the base to the socket, and it is 28 inches from the base to the tip to where a finial is missing. The base features a carved circular design at each corner, and it is 5 inches wide approximately. It is a relatively heavy piece considering its slim silhouette.
This lamp came from a South Bay antique store.
Thanks, Rhonda, for the additional photographs!
This type of candlestick was very popular during the late 19th Century, when there was a revival of things medieval and from the Renaissance. pairs of these lamps are generally more popular than single lamps; if this were a pair I would expect it to bring $400-600.
Based on the photographs and information provided, and subject to examination, you have a:
Renaissance revival bronze table lamp base
American, English or European, Late 19th Century
hollow cast, of hexagonal section, on tripod base
probably a candlestick later fitted to be a lamp base
overall height 28 inches
$ 150-250 (represents a fair market value for auction purposes; retail or asking price may vary).
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