Le Trigouir [?] before 1828

This is a pencil drawing by Pierre Félix van Doren, a Belgian painter who lived from 1797 to 1856. The artwork depicts a detailed design for a Trigouir, a type of musical instrument, created before 1828. Encased in a circle, the Trigouir is drawn with careful precision, showcasing its intricate structure of strings and tuning pegs, possibly for a musical instrument maker's reference or to illustrate the instrument in detail. The drawing is a testament to Van Doren's technical skill and his interest in music.