Wooden ophicleide, eleven keys (Serpentcleide).
The serpentcleide combines the shape of the ophicleide with the construction techniques of the earlier serpent. It was invented in England in the 1840s, but no patent was ever filed, and the inventor's identity remains a mystery. An article in an 1846 edition of 'Musical World' attributes the instrument to Charles Hugget. The first edition of the 'Grove Dictionary of Music and Musicians' (1880) gives the inventor as 'Beacham', while Brown and Stratton's 'British Musical Biography' (1897) claims the inventor was Thomas Macbean Glen.