William Welch Watercolor on Paper “Shell Street Sonata” Consign Now DeptFine Arts, Nantucket ArtSize37 ½ in. x 59 in. Overall 45 in. x 66 in. SOLD FOR $2,360 William Welch Watercolor on Paper “Shell Street Sonata”, signed lower left 37 ½ in. x 59 in. Overall 45 in. x 66 in. Please note that this auction has ended. Click here for an overview of this auction.