Cassius Marcellus Coolidge
(1844 - 1934)

Cassius Marcellus Coolidge was an American artist, mainly known for his series of paintings Dogs Playing Poker. Known as "Cash" or "Kash" in his family, he often signed his work in the 19th century with the latter spelling, sometimes spelling his name, for comic effect, as Kash Koolidge.

https://en.wikipedia.org/wiki/Cassius_Marcellus_Coolidge

Poker game
1894
Oil on canvas
105,7 x 127 cm
Private Collection
(Sotheby's New York, 18 November 2015, American Art sale, lot 78: realized $658,000 including hammer price and buyer's premium)