DENMARK. Christian IX. 1863-1906. Specimen AR 2 Rigsdaler (38mm, 28.94 g, 12h). København (Copenhagen) mint. Rasmus Heinerup, mintmaster. Harald Conradsen, engraver. Dated 1864 HC RH. KM 772.1; Davenport 79. In NGC encapsulation graded SP 66 WINGS APPROVED. Gem Specimen proof with moderate iridescent toning in hues of gold, deep blue, and honey. Absolute gem. Highest and only specimen ever graded.
Purchased from F. S. Werner, March 1972.
Though the Danish government states that no proofs were struck during this period, several "specimen" examples like the present piece are known.