Middlesex 997, National series. France (King and Queen) (Dalton & Hamer, page 190)

Denomination: halfpenny, scarcity: Extra rare (RRR)
997.  O: Two busts. LOUIS . XVI ET M. ANTOINETTE. ROI ET REINE DE FRANCE.
         Same for Nos. 995-998.
      R: A cypher P S Co., &c.
      E: Milled.

No. 997, RRR.

Keywords

louis xvi et m antoinette,roi et reine de france,psco,dedicated to collectors of medals coins