View source for 21204 - Olbia (AE Helios/Horses) over Olbia (Demeter/axe and bowcase) (Roma Numismatics, XIX, March 2020, 73)

{{Overstrike
|Image overstriking coin=Olbia_21192_Roma_Stancomb.jpg
|Image reference overstriking coin=https://pro.coinarchives.com/a/lotviewer.php?LotID=1622485&AucID=3429&Lot=73
|Image overstruck variety=Olbia Demeter Perseus.jpeg
|Image reference overstruck variety=https://pro.coinarchives.com/a/lotviewer.php?LotID=1906680&AucID=4475&Lot=319
|Sale=Roma Numismatics, XIX, 26 March 2020, 73 = Acquired from Spink & Son Ltd., 1984
|Private collection=From the William Stancomb Collection (SNG Stancomb, n° 420)
|Obverse description=Head of Helios facing, wearing radiate crown.
|Reverse legend=ΟΛ
|Reverse legend language=Greek
|Reverse description=Conjoined foreparts of two horses.
|Mint=Olbia
|Ancient region=Thrace (Sarmatia)
|Date from=250 BCE
|Date to=225 BCE
|Period=Hellenistic
|Metal=Bronze
|Weight=7.39
|Diameter=24
|Axis=12
|Coin reference=SNG Stancomb, n° 420
|Coin series reference=Anokhin 2011, n° 449; SNG BM Black Sea, n° 610-612; SNG Stancomb, n° 418-420; HGC 3.2, n° 1892
|Coin series web reference=https://greekcoinage.org/iris/id/olbia_city.anokhin.2011.449
|Overstruck obverse description=Head of Demeter to left, small head of Perseus to left behind
|Overstruck reverse legend=OΛBIO above, ΣΩMO below
|Overstruck reverse legend language=Greek
|Overstruck reverse description=Axe and bow in bowcase
|Overstruck mint=Olbia
|Overstruck ancient region=Thrace (Sarmatia)
|Overstruck date from=260 BCE
|Overstruck date to=225 BCE
|Overstruck period=Hellenistic
|Coin series reference overstruck=SNG BM Black Sea, n° 604; SNG Stancomb, n° 379; HGC 3.2, n° 1890
|Coin series web reference overstruck=https://greekcoinage.org/iris/id/olbia_city.anokhin.2011.422-32
|Frequency of overstrikes=frequent
|Level of confidence=strong
|Remarks="overstruck on Borythenes/axe and bow type"
}}