Antique German Mantle Clock Mauthe

Beautiful German mantle clock. Seems to be in working condition, but will need servicing to readjust the chimes. It chimes once every half hour, but doesn't chime the correct  amount of times hourly.  Ex.. At 1 oclock it chimes about 9 or 10 times.  I don't know much about this clock other than it is made of solid wood  and it measures 18 inches wide x 9 inches tall and is 5 inches in depth.  It has a pendulum that you have to remove whenever you move the clock and also comes with the key.  There was a typewritten note in the back with some instructions and a  contact name and number.  I don't know how old it is but I do know that it was purchased at an antique shop in Berlin Germany back around 1980-81.  Please examine photos closely as I do not accept returns.  Prompt payment is appreciated.  Thanks!