Title: Rock Harmonicon
Object type: Rock Harmonicon
Date: ca. 1880
Culture: British
Artist:  William Till 
Artist nationality: British
Artist role: Maker
Medium: gneiss and hornblende schist
Dimensions: Overall: H. 106.7 x L. 247.7cm (42 x 97 1/2in.); Longest stone: 77 cm (26 in.); Shortest: 22.9 cm (9 in.)
Classification: Idiophone-Struck-bar-stone
Credit line: The Crosby Brown Collection of Musical Instruments, 1889
Geography:     United Kingdom      
Department: Musical Instruments
Repository: Metropolitan Museum of Art, New York, NY