I am incapable of walking away from a nice old brush, so here's another, this one with an old ribbon tied tightly around the top of the handle, which has prevented me from figuring out whether the handle is threaded or not! It's beautifully aged with a full head of tapered black bristles, horsehair I assume, flecked with a few white ones. Some wear to the edge of the wood at the head but in overall very good shape and really pretty.
11 3/4" long overall; handle is 8 1/4" long. 2 1/2" in diameter.