Autographs of renowned figures like Jake Shimabukuro and Taimane Gardner can add scarcity and desirability to the instrument. Collectors, fans, and enthusiasts of ukulele music may be interested in acquiring such a unique item, potentially increasing its market value.
It's essential to note that the value of autographed instruments can vary depending on several factors, including the condition of the instrument, the rarity of the autographs, and the market demand at the time of sale. Having a professional appraisal done by a qualified instrument expert or reputable musical instrument dealer can help determine the accurate value and provide documentation of the instrument's condition and authenticity.