Altus 907 E Transverse Flute, closed holes, E- mechanism, offset G, C- foot, hand crafted silver plated nickel silver flute, hand carved .958 Britannia Silver headjoint, drawn tone holes, stainless steel springs, 442Hz, incl. case. The Altus 907, one of our most popular upgrades for the more learned flutist, is enhanced with a professional style .958 Britannia Silver headjoint, an acutely accurate scale, and precisely tuned harmonics. Full of colorful overtones, this flute enables the developing flutist the opportunity to explore and develop their tone and musical expression.