"Antique" emergency car light (car battery powered) (Harrogate HG1)

At least 50 years old and never used for its intended purpose. In fact never used at all. It worked last time I tried it and it's been in a cardboard box ever since. Bright clear light on one end and a flashing red light in the other. Hook to hang it from a bonnet or boot lid or a car door. Enough cable to extend the length of most cars / sub's / small vans. Would work for camping as well I suppose provided you have a 12 volt battery.