M FURIUS Lf PHILUS ROMAN REPUBLIC AR Denarius OBVERSE: Laureate head of Janus; M•FOVRI•L•F around REVERSE: Roma standing left erecting trophy, gallic arms around, ROMA to right, PHLI in ex. Struck at Rome, 119 BC 3.81g, 18.35mm Crawford 281/1, Syd 529, BMCRR (Italy) 555, Furia 18 NERO AR Drachm OBVERSE: NERO CLAVD DIVI CLAVD F CAESAR AVG GERM, laureate head of Nero right. REVERSE: DIVOS CLAVD AVGVST GERMANIC PATER AVG, Claudius' laureate head right Struck at Caesarea, Cappodocia, 63/4AD 3.6g, 17mm RIC 621, RSC 3, RPC 3648
Here's a double-struck Parthian coin, a drachm of Orodes II (57- 38 BC): The extra face (actually it would have to have been the first one struck, if you think about it) is very low down on the flan; the second strike gave a nice, clear face that is well-centered but didn't obliterate the original face. (The reverse also shows the effects of double-striking.)
Beautiful Nabataeans! These coins are fascinating. I'm amazed at how inexpensive they are by comparison with the Seleucid, Ptolemaic, and Judaean coins.