Vepar Coin

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

"The Forty-second Spirit is Vepar, or
Vephar. He is a Duke Great and Strong and appeareth
like a Mermaid. His office is to govern the Waters, and
to guide Ships laden with Arras, Armour, and Ammunition,
etc., thereon. And at the request of the Exorcist
he can cause the seas to be right stormy and to appear
full of ships. Also he maketh men to die in Three Days
by Putrefying Wounds or Sores, and causing Worms to
breed in them. He govemeth 29 Legions of Spirits, and
his Seal is this, etc"