Shepherd's whistle
They are also produced commercially. Simple whistles may cost less than 1 USD in bulk; expensive ones may be quite ornate. They are commonly made of plastic, aluminum, stainless steel, silver, brass, titanium, Corian, jade, buffalo horn and other materials.
James Abbott McNeill Whistler
On October 27, 2010, Swann Galleries set a record price for a Whistler print at auction, when "Nocturne", an etching and drypoint printed in black on warm, cream Japan paper, 1879–80 sold for $282,000. It was likely one of the first etchings Whistler made for the Fine Art Society on his arrival in Venice in September 1879 and also one of his most celebrated views of the city.