These pump organs were popular in the 19the century and early 20th century. The Miller Organ, a reed organ known for its elaborate design and high quality. The Miller company was established in 1873 in Pennsylvania by A.H. Miller and A.B. Miller. They produced organs until the early 20th century. This organ is still working!! Dimensions: 187cm (h) x 113cm x 60cm. General age related wear and tear.