I have A John Moncas Movement and Case number both 428. I know nothing about this watch only that it runs very well. Did John Moncas do each piece different ? Something else I tried to find is that the case also has a Hallmark NB & Co. I couldn't find anything on that either. I was told this one was made in 1809 which may not be correct. I have read all threads and have to say thanks to everyone for the info. I'm not even sure how old thread is.
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