Great Britain. Victoria (1837-1901). Proof Halfcrown, 1885. Young head left, Crowned Arms within open wreath. S.3889, KM 756. PCGS PR 67. A superlative coin with flashy mirrorlike surfaces and vivid iridescent toning - golden obverse center haloed by an azure blue periphery; silvery sea-blue and pale gold reverse. Possibly the finest known.