This is an Oldham S4V Super Hewers' electric hand lamp manufactured by Oldham & Son Ltd. of Denton, Manchester, England during the 1930s. The lamp consists of a lower metal bonnet that slid over the lamp’s battery, and a light bulb at the top that is encased in a ridged glass cylinder. Oldham & Son began servicing the mining industry in Manchester in 1865 with a variety of machines, before manufacturing mining lamps and batteries in the 20th century.
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