Not sure about the date it was made, probably 1978 for a centenniel/ However, I don't know when Lyman's company started selling sights. As stated above the first patent was 1879. That doesn't mean that William Lyman was not selling sights earlier. Lyman purchased the Ideal reloading tool company in 1825, but Ideal started about 1884. The pistol modeled after an 1858 New Model Army Remmington. Flasks such as in the picture were made at least in the 1850's, by the American Flask and Cap Company of Waterbury Conn.