Dublin 2, (Dalton & Hamer, page 459)

Denomination: penny, scarcity: Extra rare (RRR)
2. O: A female seated holding a harp, a spade and pickaxe under, within a circle
      of leaves.
   R: A cypher H M Co., CAMAC KYAN AND CAMAC. ONE PENNY.
   E: PAYABLE IN DUBLIN OR BALLYMURTAGH.

No. 2, RRR.

Keywords

no_legend,camac kyan and camac,one penny,hmco