Help me with this clock

by Jack
(Watauga, Tx)

I have a wall clock with a nice oak cabnet, beveled 3-piece glass on top and a convex glass.
All brass works.

The only symbol I have found is a cresent moon surounding the letter B. On the back of the works is Munstershultze #773488.

What is it what it worth. Help me please, Jack.