In many cases, the serial number will be quite obvious. Knowing where to start looking, however, will certainly ease the process of locating it. Particularly where the serial number is stamped into wood, as the shellac or other finish wears off, so too does the clarity of the indentation (if any indentation remains at all). As a result, the numbers may be hard to decipher: 8’s may look like 3’s and 0’s like 9’s. Take especial care to study the number, as we have seen purported serial numbers that do not correspond to the piano to which they are affixed.
Compare the information with the online site located at OrganService.com. Search through the numbers located on the left side of the screen. Once the model number has been found, confirm the organ model is correct. The last column will provide the year of the organ.