Crystal Grandfather Clock

Clock is marked IS. I can't find any information on a clock manufacturer with those initials. The quartz movement was manufactured by Hechinger Quartz Movement of West Germany. It is a solid glass structure with the face made as a part of the body and the movement portion attached to the body. Although, I am not able to give an exact date of manufacture, one can get a general idea since it is marked West Germany. It is 6 1/2" in height and 4" in width and weighs approximately 2 1/2 pounds. It is in working condition. There is a tiny nick on the edge, which is more felt than seen. Uses AA battery. If you have any questions, please email. I need your zip code to calculate the postage.