Watch List notes:

Isle of Man (James Stanley, 10th Earl of Derby), silver proof 1/2 penny, 1733, plain cap, NGC PF 63. KM-4b.1; Prid-29A. Bold strike with attractive toning over luster, small mark to left of cap but otherwise near-pristine, tied with three others for finest known in the NGC census (and none at PCGS). Despite being an off-metal (and higher value) proof issue, a surprising amount of these have received circulation wear, as evidenced by two AU and two XF examples in the NGC census and even lower grades at PCGS. NGC #2770569-012.
($1,250-$2,000)