my mother went to a museum in doylestown pa, it was called the mercer museum, she informed me that she saw another clock by the same person, the only other one that she had ever seen aside from ours, so i will have to agree with you, i dont know if i mentioned it or now, but the way my father explained it to me, it was his great grandmothers wedding gift, and it was used when it was given to her, it has been in our family for about 100 years or so, i believe it is about 150 years old at this point