Victorian Antique Night-watchman's Oil Lamp Lantern

This is a lovely antique oil (or kerosene) lamp which probably dates to the late Victorian period around 1880-1900. I've described it as a night-watchman's lamp, but I've not seen this design before, so can not be sure. You should make up your own mind about this. At the rear are a pair of handles, but there is also a clip whereby the lamp could be fitted onto a holder, or possibly a belt. The reflector plate appears to have been painted with aluminium paint at some time in the past few years, but otherwise, the condition seems to be original. I have been unable to find a maker's or retailer's mark. It is approx 6.5" (16.5cm) tall.