The appraised work is a lithograph by American artist and sculptor Alexander Calder (1898-1976) signed and dated in plate, titled 'Spirals.' The print depicts a series of bold lines, colors and forms that created repeated spiral patterns of varying sizes. Though perhaps best-known for his wire mobiles, Calder was also an avid printmaker, particularly at the end of his career. His prints tend to feature primary colors, geometric lines, spirals and flattened biomorphic shapes, elements often reminiscent of his sculptural work. The estimate provided is based on comparables recently offered and sold at auction. The appraised work's size, composition, medium and condition (based on images provided), as well as the artist's current auction market were taken into consideration when determining the estimate. In many cases, pricing for similar examples available on the primary (retail) market vary, and are often higher than secondary (auction) market examples.