Watch List notes:

NGC MS63 | *Top Pop* | Edward VII (1901-1910), Halfcrown, 1905, edge milled, 14.18g, 12h (Davies 1513; Bull 3571 [R2]; ESC 750; Spink 3980), some smoothing before neck to remove bagmarks and an errant staining spot on shield, otherwise lustrous, a truly spectacular example, stunningly bold for issue, extremely fine and much as struck, THE FAMED KEY DATE, extremely rare in this remarkable state of preservation, in NGC holder, graded MS63 (Cert. #6295510-056) [*Single Finest*].
https://www.ngccoin.com/certlookup/6295510-056/63/
Estimate: £8,000 - £12,000