Watch List notes:

NGC PF66 | George V (1910-1936), 'VIP' Proof Sixpence, 1934, by Bertram Mackennal and Kruger Gray, bare head left, rev. oak leaves and acorns, edge milled, 2.83g, 12h (Bull 3915 [R6]; ESC 1823A; Spink 4041), a sumptuous proof of record, a small staining spot behind head, otherwise handsomely cabinet toned and brilliant, choice as struck, and of the highest rarity, in NGC holder, deservedly graded PF66 (Cert. 6295112-005) [Top Pop]