Tag #: 200321
Serial #: 96470
|Bell Diameter||Bore Size||Height|
|10 3/4″||.565″, 1-2 Bb side & 3 comp. loop; .575″ 1-3 F side; .605″ 4||25.0″|
“CLASS / A / Enharmonic / Patented / BESSON & CO. / “Prototype” / 198 EUSTON ROAD / LONDON / ENGLAND / * ” on bell. Ornate floral engraving on bell. “BESSON & CO. / * / BREVETE” on 2nd valve.
The enharmonic system was an early Besson rival to the Blaikley system used by Boosey and Hawkes. While the Blaikley system is a compensating system, the enharmonic is a variety of full double, having full length slides for both the Bb and F sides of the instrument.