Patent Dates and Historic Significance
The cast iron plate on the harp displays patent dates: NOV 27, 1877, and JAN 7, 1879. These correspond to historic U.S. patents for piano frame designs. During the late 19th century, cast iron frames were popular because they could handle the immense tension of piano strings.
The harp’s wood and metal construction matches typical late 19th-century upright pianos. A decorative sunburst pattern adorns its side, and two wooden dowels protrude from the top, likely supporting the piano’s internal mechanisms. Despite decades underwater, the cast iron remains largely intact, though it shows considerable rust.
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