Henry Kirke Brown (1814-1886) - Choosing of the Arrow (1849), front partly right, knees upward - Metropolitan Museum of Art New York, Sep 2012
"In 1848, the American Art-Union, a New York–based art lottery organization, commissioned Brown to produce twenty casts of Choosing of the Arrow for its annual distribution. The Art-Union commission stipulated a statuette "illustrative of Indian form and character," and Brown represented a male nude reaching with his right hand to draw an arrow from a quiver strapped on his back. Brown was among the first sculptors to study Native American physiognomy, dress, and customs first-hand. In 1848, he traveled to Mackinac Island on Lake Huron, where he spent time among the Ottawa and Chippewa tribes."
The statuette may illustrate Indian (sic) form and character, but I'm pretty sure it doesn't illustrate typical (lack of) costume. I guess that was the *artist's* choice.