These are the best two places to begin your search. Are you looking only at the grandfather clocks dial or face, or are you also examining the back of the grandfather clock movement. What if you see no markings on your grandfather clock. Do you have the serial number for one of your Howard Miller Grandfather Clocks and want to know the year it was made? Same situation with a Ridgeway Grandfather or Floor Clock or one of the Hermle Grandfather Clocks or a Kieninger Grandfather Clock or Grandmother Clock? Grandfather Clock Information Loading.Please Wait.Īre you trying to identify the age of you antique grandfather clock. Kieninger Triple Calendar Moonphase Clocks.