met-musical-instruments:Seven String Bass Viol by Nicolas Bertrand, Musical InstrumentsThe Crosby Br
met-musical-instruments:Seven String Bass Viol by Nicolas Bertrand, Musical InstrumentsThe Crosby Brown Collection of Musical Instruments, 1889Metropolitan Museum of Art, New York, NYMedium: Maple, sprucehttp://www.metmuseum.org/art/collection/search/501909 -- source link