The piano business was a hit and before long, the company had outgrown. You can find the book through a piano technician or dealer, in libraries, or from Where dates are not available in Pierce, or the serial number cannot be found, an experienced technician or rebuilder may be able to estimate the age of the piano from technical features or furniture design. Over the years, Grinnells went from selling parlor organs to grand pianos to spinets. For those not still in business, the Pierce Piano Atlas provides dates of manufacture from serial numbers for thousands of piano brands, both current and past. Thousands of cracks, keygens and patches are presented in our storage. Sometimes the information is on the manufacturer’s web site. Locate and download Dirk's Piano Tuner v.4.0 serial number maker from our site. (If there appears to be more than one serial number on the piano, usually the longer one is the real serial number, the other being a number used by the factory during production.) If the manufacturer is still in business, it may be able to provide the year of manufacture from the serial number. See this illustration or this video for typical locations. Each piano is given a serial number at “birth.” It’s usually located somewhere in the tuning pin area of the cast-iron plate, though sometimes it’s elsewhere, or difficult to find.