Catalog: Parts: DUPLO, Figure Wear & Utensil: 41759pb03: Color Images
Duplo Utensil Round Sign with Handle with Red Sound Board, Black Strings, Yellow Flowers, and Bright Green Leaves Pattern (Musical Instrument, Ruan / Moon Guitar)
Reddish Brown
by Pommerening_S.

Part Color Codes:

 Color  Code  By 
 Reddish Brown  6420906  1  Turez