Western Electric (company) is an old company, and it's sewing machines are on bid on Ebay. It will be very difficult to find one for sale except on auction. The following link will take you to the page where it is up for bids starting at US$ 9.9. Its an antique piece from the early 1900's. The page has a picture of the machine as well.
Western Electric sewing machine
Western Electric sewing machine