This was in one of the tool cupboards from the E. Howard tower clock portion of the factory when it closed. I am not certain what a watchmaker has to do with tower clocks, but we are just reporting what was found. Anton Weiss, watchmaker, with Charles May, 386 Washington St., residence 18 Truro St. Boston. I have not successfully deciphered any of the handwriting on the card, but the card was proudly tacked up in the tool cupboard for a hundred + years I suspect. I know where the card and the cupboard have been since the factory closed down, so that covers nearly 60 years on its own.... I have not found anymore information on Weiss or May in the usual places but I have not looked under every available rock either.