ELECTROTYPES, ATTICA, Athens. Circa 469/5-460 BC. AR dekadrachm (48,02 g). Head of Athena to right, wearing earring, necklace and crested Attic helmet / Owl standing facing, wings spread; olive sprig and crescent to upper left, A-Θ-E around; all within incuse square. Marked RR (Robert Ready) on the edge. Rare., Grade: 1+, From the Collection of Olav E. Klingenberg; Ex Classical Numismatic Group, Electronic Auction 365, 16.12.2015, lot 574