aquatint (mezzotint?)

Handcolored aquatint (or mezzotint), mounted on cardboard, from "R. Ackermann's Yachting Scraps", plate 1, "Running off the wind", printed across bottom "Drawn by W.A. Knell. London: Published April 20, 1850, by Rudolph Ackermann, at his Eclipse Sporting & Military Gallery, 191 Regent Street. Engd. by J. Harris." Scene shows 2 British cutter yachts racing, other sailboats in background.