This page contains photographs of an 1890s Morning Coat, which should give a fair idea of typical construction techniques. There was considerable uniformity in Victorian tailoring, so most of what one sees on this garment could apply to many others.
The coat is made of charcoal gray (almost black) wool with a rough texture. The edges are finished with silk grosgrain. The grosgrain used to be black, but has faded to gray. The buttons are covered with silk.