Middlesex 515, Skidmore's (Dalton & Hamer, page 152)

Denomination: halfpenny, scarcity: Excessively rare
515.  O: A figure of Minerva. TRUTH FOR MY HELM & JUSTICE FOR MY SHIELD.
         Same for Nos. 514-516.
      R: A cypher P S Co. 1797, &c.

Nos. 480a-519, are with few exceptions exceedingly rare.

Keywords

truth for my helm justice for my shield,psco,dedicated to collectors of medals coins,1797