Belial Medallion

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

"The Sixty-eighth Spirit is Belial. He
is a Mighty and a Powerful King, and was created next
after Lucifer. He appeareth in the Form of Two Beautiful
Angels sitting in a Chariot of Fire. He speaketh
with a Comely Voice, and declareth that he fell first from
among the worthier sort, that were before Michael, and
other Heavenly Angels. His Office is to distribute Presentations
and Senatorships, etc. ; and to cause favour of
Friends and of Foes. He giveth excellent Familiars,
and governeth 50 Legions of Spirits. Note well that
this King Belial must have Offerings, Sacrifices and
Gifts presented unto him by the Exorcist, or else he will
not give True Answers unto his Demands. But then he
tarrieth not one hour in the Truth, unless he be constrained
by Divine Power. And his Seal is this, which is
to be worn as aforesaid, etc"