The example below uses information from the American Waltham Watch Company, but that is just an example. You should consult the serial number table for the specific brand of watch movement you are trying to date by selecting a company from the menu on the left. Not all vintage watches can be dated using the serial number. Some American watch brands did not use a consistent series of serial numbers, but most of the big manufacturers did. Most vintage Swiss pocket watches did NOT have serial numbers and can't be dated by this method. Many watch companies made hundreds of thousands of watches, and some companies made millions of watches!
English Metalware. The following metalware information was formerly available on the Oxton Decorative Arts web site:. This was a system which came into being in and started to decline in the early s. It enabled manufacturers, retailers or designers to register their designs, so that they could not be copied. It was therefore like a cross between a patent and a copyright.
Patent Information found on antique bottles can be an excellent source of information to help you date your bottle and find out information on the history of the bottle manufacturer and their design. By far the easiest way to make use of patent information is to check the patent number on your bottle with the following patent date chart. It can quickly give you an approximate date when the patent was issued, and thus some idea of when the object was made. Patent copies are the diagrams and text that an inventor submitted to receive his or her patent. They contain scaled drawings of the invention or design along with a detailed description of the construction and function.