Metal, detailed, dimensional button hand made in USA by Susan Clarke. Bronze-brown color. Great detail in the fur and red collar; it's wonderful.  Each one is painted by hand. The dog is approximately 1-1/2" across  x 3/4" high.  This button is lighter than it looks because it's not solid metal; it's a sheet that is formed to the shape. Shank back with an opening around 3mm.