National Kei-Lac Co., Chicago, Illinois, "Kei-Lac Advertising Clock", time and slide projector, one spring driven balance wheel movement tells the time and another spring driven motor advances a circular panel holding 12 glass advertising slides, all with
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16 March 2026
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National Kei-Lac Co., Chicago, Illinois, "Kei-Lac Advertising Clock", time and slide projector, one spring driven balance wheel movement tells the time and another spring driven motor advances a circular panel holding 12 glass advertising slides, all with
The unit received some mechanical restoration in the late 1980s as indicated by some of the included documents. This appears to include a new socket f...