|Kimura tail lamp|
Mounting a vintage flashlight on a front rack seems to be a popular way to dress up your vintage (or modern classical) touring/randonneuring bike. Historically I think these flashlights served as auxiliary lighting for bottle dynamo systems when stopped. Here is a particularly gorgeous example from the Velo-Orange site:
|Vintage flashlight on a bike. Image from Velo-Orange.|
The tail lamp is especially intriguing. I wonder if the lens is pulled from a mass-produced light or if it was made specially for this application. They also have a nice selection of reflectors.