This one has the Acton vent, introduced to improve tuning. A lovely B&H Symphony 1010 Bb clarinet serial no. 419113 made in about 1983. I bought this clarinet in 2011 and have been using it for orchestral and chamber music.
Boosey & Hawkes Symphony 1010 Clarinet Bb
Boosey & Hawkes Set Of 3 Valve Top, Outer Sprung Springs For Boosey & Hawkes/Besson Cornet/Tenor Horn
Schubert - Octet vintage Hawkes Pocket Scores - published Boosey & Hawkes
Boosey & Hawkes ‘Artia’ Excelsior old Cello for restoration
Boosey & Hawkes Regent II Trombone with Hard Case
Ajax Snare Drum - Boosey & Hawkes - London - Made In England - Vintage
