It's a Giant. It's a Novelty. It's a Tuba Named Big Carl. - The New York Times
Tubas – Kanstul Musical Instruments
O'Malley "Wurzburg" BBb Tuba from O'Malley Musical Instruments
Amazon.com: Mini Tuba Model, Miniature Tuba Model Brass Gold Plated Euphonium Mini Miniature Tuba Musical Instrument Model for Home School Office : Musical Instruments