A pair of similar design and origin is illustrated in The Brass Book, by Peter, Nancy, and Herbert Schiffer (see scan below).
Height: 5 3/4 in.
Depth: 4 1/4 in.
Width: 4 1/4 in.
Dimensions
Height: 5 3/4 in
Seat Height:
Width: 4 1/4 in
Depth: 4 1/4 in