A friend of mine snapped these pictures at a museum in Ghana. The label says this is a chief's regalia. The bridle is obviously in a bit of disrepair - the reins normally connect to the ends of the loose chains that hang from the bit, and there should be decorative cheekpieces connecting the bit to the upper part of the bridle around the ears.
What stands out is the decoration on the breastcollar - zigzag patterns in red on a white background. Even more beautiful is the rider's robe - a voluminous blue and white gown with embroidery on the chest.