Sunderland, Rowland Burdon (MP), Denton's Penny, 1796, view of the iron bridge with two sail-barges passing underneath, rev. legend in eight lines within palm wreath, edge ON DEMAND WE PROMISE TO PAY ONE PENNY. 35mm/20.57gm. (DH 3a). Struck over a Penny of Mary Lambe of Bath. Cleaned
and subsequently lacquered, otherwise about Extremely Fine, excessively rare; believed the only specimen available to commerce.
Ex. J.R. Farnell Col., Part I, Sotheby's Auction (New York), 8 Dec. 1981, lot 23; Ex. W.J. Noble Col., Part I, Noble Numismatics Pty Auction 58B (Melbourne), 7-8 Jul. 1998, lot 86. Ex. Spink Auction 147, 4-5 Oct. 2000, lot 766.