1866 Essay of Riester complete set of essays in the four recorded colours showing marginal ornaments, very fine and scarce (NP $500) (Image)

1866 Essays of Reister with ornamentation and horizontal scorelines, in brown (2, one with decent impression of ornament and one without), green (with very strong impression of ornament) and red (with weak impression of ornament), very fine. (Image)

1867 Essay of Penasson 1pi black, vertical pair, fine and scarce (Image)

1867 Essay of Penasson 10pa, scarce (Image)

1867 Essay of Penasson 2pi, minor imperfections, scarce (Image)

1867-71 Essays of Penasson selection six different, all but one imperforate, some faults, a scarce group (6) (Image)

1871 Essay of Penasson selection sis essays in four different colours, imperf and perf, with and without value, some faults, fine and scarce group (6) (Image)

1871 Essay of Charles Skipper 2pi die proof in black, on special Dr. W. Byam Christmas 1946 card, very fine and scarce (Image)

1906 Bradbury & Wilkinson 10m essay affixed to card showing camels and Bedouins in red, blue and black, "SPECIMEN" perfin that has caused a small piece to become separated and reattached at lower right, a scarce essay (Image)