Great Britain. Proof Halfcrown, 1911. S.4011; ESC-758; KM-818.1. George V. Obverse portrait of king by Mackennal. Reverse, shield of arms. Gem proof. A dazzling specimen, toned in shades of blue green and gold. It would be difficult to find an example with more eye appeal. NGC graded Proof 66. Estimated Value $450 - 500