Watch List notes:

Hackney, David Rebello, Skidmore's mule Penny, parish church with arms above rev. PMCo cypher, edge plain, 36mm/27.47gm. (DH 19). Small stain on obverse, otherwise virtually as struck, with full original
mint bloom, especially on rev. extremely rare.

Ex. Glendining's, 6 Jun. 1990, lot 451; ex S.E. Schwer Jul. 1990; Ex. DNW 5 Oct. 2011, lot 159.