b'62327327E PS POSTAL CARDS: 1880 1d unissued Postal Card Essay in Black with two impressions of the First Sideface 1d Die I in the upper-left or upper-right corners of the card, with identical wording on the face and reverse to the d Postal Card essay (see lot 1). Only 3 recorded.Ex R.A. Butler. $8,00010,000328328P PS POSTAL CARDS: near final Proof of the issued 1d Postal Card in carmine, only lacking the positional lines above and below the heading which were a feature of the issued card. Only known example.Ex R.A. Butler. . $4,0006,000'