Case key and winding key for the time recorder
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Case key and winding key for the time recorder, by the British Time Recorder Co. Ltd, London, England, 1905
"Clocking in" time recorder, made by the British Time Recorder Co. Ltd, London, England and used at the General Post Office (GPO) Central Telegraph Office on the corner of Newgate Street and St Martin's Le Grand, London for exchange workers clocking in and out from 1905 onwards.
