Take note that on this bridle there is no bit, rather the control of the horse is effected through pressure on the nose. A chain is used to place pressure on both the front and the back on the nose and as you can see here there are numerous small teeth like ornaments hanging from the chain. This is called a Dancing Noseband as these ornements jingle up and down when in use.
The bridle and breastcollar illustrated here was hand-made in Egypt especially for Bess and the museum.