View source for SO 1490 - Seriphos (didrachm) over Aegina (Rago 1962, 2)

{{Overstrike
|Image overstriking coin=SO_1490_-_Seriphos_(didrachm).png
|Image overstruck variety=Aegina_550-510.png
|Image reference overstruck variety=https://numismatics.org/collection/1941.153.583
|Obverse description=Frog.
|Reverse description=Incuse square, irregular shape within.
|Mint=Seriphos
|Ancient region=Cyclades (Seriphos)
|Date from=530 BCE
|Date to=525 BCE
|Period=Archaic
|Metal=Silver
|Weight=11.65
|Diameter=23
|Denomination=stater
|Standard=Aeginetic
|Coin reference=Rago 1962, p. 5-12 (fig. 2)
|Coin series reference=Sheedy 2006, p. 175-176, n° 1-15 ; HGC 6, n° 682
|Coin series web reference=https://greekcoinage.org/iris/id/seriphos_sheedy_2006_a
|Overstruck obverse description=Turtle (visible on obverse).
|Overstruck reverse description=Incuse square.
|Overstruck mint=Aegina
|Overstruck ancient region=Aegina
|Overstruck date from=550 BCE
|Overstruck date to=510 BCE
|Overstruck period=Archaic
|Coin series web reference overstruck=https://numismatics.org/collection/1941.153.583
|Frequency of overstrikes=exceptional
}}