A builder's model of a Hall PH-1 flying boat
attributed to Roy Gayhart, circa 1923
a solid mahogany architect's model in mahogany and brass of a U.S. Navy bi-plane, with flared hull, pontoons, wings stenciled with design number and other details, engines and pilots in the cockpit.
21-1/2 x 30-1/2 in. (54.6 x 77.4 cm.) length x wingspan.