Spear-butt with Modern Mouthpieces (IMAGE) Australian National University Caption The 3-D printed artifact (left) with mouthpieces of a modern trumpet (right) and french horn. Credit Stuart Hay, ANU Usage Restrictions must credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.