What year was pump organ serial?

The pump organ, also known as a parlor organ or reed organ, became popular in the mid-19th century, with many being produced from the 1850s to the early 20th century. Serial numbers for these instruments were often used by manufacturers to track production and model information. However, the specific year when serial numbers were first introduced varies by manufacturer. Each brand might have started using serial numbers at different times, so it's essential to refer to the specific maker for detailed information.