View source for 21551 - Metapontum (nomos ear of barley/ear of barley) over Agrigentum (eagle/crab) (CNG, 124, Sept. 2023, 29)

{{Overstrike
|Image overstriking coin=Agrigentum_21551_CNG.jpg
|Image reference overstriking coin=https://pro.coinarchives.com/a/lotviewer.php?LotID=2257819&AucID=5469&Lot=29
|Image overstruck variety=Agrigentum 510-500.jpg
|Image reference overstruck variety=https://pro.coinarchives.com/a/lotviewer.php?LotID=2245785&AucID=5445&Lot=47
|Sale=Classical Numismatic Group, 124, 19 Sept. 2023, 29
|Obverse legend=MET
|Obverse legend language=Greek
|Obverse description=Ear of barley with five grains; head of ram to left
|Reverse description=Incuse ear of barley with six grains
|Mint=Metapontum
|Ancient region=Lucania
|Date from=470 BCE
|Date to=440 BCE
|Period=Classical
|Metal=Silver
|Weight=7.54
|Diameter=21
|Axis=6
|Denomination=nomos
|Standard=Achaian
|Coin series reference=Noe Class 1927, X, 223 (same obv. die); Noe - Johnston 1984; HN Italy, n° 1485; HGC 1, n° 1027-1029
|Coin series web reference=https://greekcoinage.org/iris/id/metapontum.hn_italy.1484-1486
|Overstruck obverse description=Sea eagle standing left with folded wings
|Overstruck reverse description=Crab
|Overstruck mint=Agrigentum
|Overstruck ancient region=Sicily
|Overstruck date from=510 BCE
|Overstruck date to=440 BCE
|Overstruck period=Classical
|Overstruck denomination=didrachm
|Overstruck standard=Attic
|Coin series reference overstruck=Westermark 2018
|Coin series web reference overstruck=https://greekcoinage.org/iris/id/agrigentum.westermark_2018.didrachms_groupe_i-iv
|Frequency of overstrikes=frequent
|Level of confidence=sure
|Remarks="Overstruck on a didrachm of Akragas (elements of the crab are visible on the obverse)"
}}