Lancaster Antiques has dated this piece to the 1920s.
On the base is the mark Benziger Bros and underneath - Maker, New York. Inside the wick area is the registered no: 65891 dating the lamp to around 1917. The wick mechanism marked Hinks No 2 Duplex.

The Night and Day glass shade is original, and so called because of the opaque top half and clear glass underneath.
Postage and packing within the UK mainland is included in the price and for remote areas or abroad please contact us for a delivery quote.
Lancaster Antiques has dated this piece to the 1920s.
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