I don't know a great
deal about these but I am told it is a clock that dates from the
early 20th century. These were designed to be put in an automobile
as the back is threaded so it can be screwed into a dashboard. It
is constructed of brass which has developed a nice light patina over
the years. The face is in good condition with some some light flaking
near the numbers. Mechanically, the clock is not working...it will
not wind which leads me to suspect it may have been wound too tightly.