The last picture enlargement shows how the toggle would have been used to secure the cords of a hat. The bead would be moved up the cords so that the toggle would be tight under the chin. This system would hold the hat on the head while miniumizing preasure and discomfort to the skin.
Visible in the pic...
This piece has been held in storage by a Texas collector and is in excellent condition. The mirror is detachable and is held in place by tendons which slip...