1780 Portuguese English guitar at the Victoria and Albert Museum, London - From the curators' comments: "The English guitar was a fashionable instrument from about 1750, considered easy to play and tuned in C major, although the player would use a capo, much like a modern folk-guitarist, in order to change the key. The tuning pegs were often small metallic pins that could be turned with a watch-key, to keep the strings in tune longer."
1813-1825 French Bassoon in C at the Metropolitan Museum of Art, New York - From the curators' comments: "The instrument has two alternative wing joints for high and low pitch, and a screw to adjust the bocal. The keys and metal parts were designed in 1813 and made by C. H. Felix in Paris, as an inscription states. Felix's design consists only in the decorative aspect of the keys, not in their number and placement."