Anglesey 263, Penny mules (Dalton & Hamer, page 369)

Denomination: penny, scarcity: Extra rare (RRR)
263.  O: A monogram cypher, P M Co. WE PROMISE TO PAY THE BEARER ONE PENNY 1788.        
         Date above the cypher.
      R: Bust to right. J. PRIESTLEY CITIZEN OF THE WORLD.
      E: WE PROMISE TO PAY THE BEARER ONE PENNY.

No. 263, RRR.

Keywords

pmco,we promise to pay the bearer one penny 1788,j priestley,citizen of the world