Title: Valve Trumpet in F
Object type: Valve Trumpet in F
Date: ca. 1839
Culture: British
Artist:  John Augustus Köhler 
Artist bio: British, London ca. 1810–1878 London
Artist nationality: British
Artist role: Maker
Medium: Brass
Dimensions: L. (w/o mouthpiece) 12.2  x  Bell diam. 55.9cm (4 13/16 x 22in.)
Diam. of bore at tuning slide .431
Classification: Aerophone-Lip Vibrated-trumpet / trombone
Credit line: The Crosby Brown Collection of Musical Instruments, 1889
Geography:  London England  United Kingdom      
Department: Musical Instruments
Repository: Metropolitan Museum of Art, New York, NY