Bune Medallion

This is a seal from the book "Lesser Key of Solomon".  According this text, the spirit Bune, is described thus

"The Twenty-sixth Spirit is
Bune (or Bim). He is a Strong, Great and Mighty
Duke. He appeareth in the form of a Dragon with
three heads, one like a Dog, one like a Gryphon, and one
like a Man. He speaketh with a high and comely Voice.
He changeth the Place of the Dead, and causeth the
Spirits which be under him to gather together upon your
Sepulchres. He giveth Riches unto a Man, and maketh
him Wise and Eloquent. He giveth true Answers unto
Demands. And he governeth 30 Legions of Spirits. His
Seal is this, unto the which he oweth Obedience. He
hath another Seal (which is the first of these, but the
last is the best)"