Sonotone Corporation was a hearing aid manufacturer founded in New York City in 1929 by Hugo Leiber, the inventor of the bone conduction receiver. This striking poster with its bold red and black printing really stands out and I really like the old tape that was used that is now yellowed and adds a nice hint of color throughout. It looks like some taped areas were used to stabilize the poster at the seams. The Monotone building remains in New York , which is now a renovated building with various businesses as Sonotone closed its doors in 2005. Poster has signs of wear and some small tearing but overall a great graphic. Measures: 25.5” x 31.5”