This Alexander BBb tuba dates from circa 1960 and was considered one of the finest of its type at the time it was produced. It was originally acquired by a Native American school in South Dakota in 1961.
The Alexander firm, which is still in existence, dates back to the late 18th century. That makes it one of the oldest, if not the oldest, continuous brass instrument maker in the world. Alexander was, and still is, known for the high quality of their double horns and their bass and contrabass tubas which were considered some of the finest produced in Germany after World War II.
https://simonettitubacollection.com/ins ... -4-rotary/