Nomos AG
Auction 22 22 Jun 2021
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THRACE
Byzantion. Circa 235-220 BC. Tetradrachm (Silver, 28 mm, 16.85 g, 10 h), originally struck c. 280-275, probably at Pella, under Antigonos II Gonatas; it was subsequently countermarked for use in Byzantion. Head of Herakles to right, wearing lion's skin headdress; below his ear, countermarked in a large, circular indent, ΠΥ above a galley prow to right, with a dolphin swimming downwards on the truncation of the prow. Rev. AΛEΞANΔΡOΥ Zeus seated left on backless throne, holding eagle on his outstretched right hand and long scepter in his left; in field to left, bunch of grapes; in exergue, monogram of ΣΚΕ. For the original coin: Mathisen 26. Price 590. For the countermark, see: M. Thompson, "A Countermarked Hoard from Büyükçekmece", MN VI (1954), type II, 48-52, and W. M. Stancomb, "Some Countermarked and Overstruck Hellenistic Coins from the Region of the Thracian Bosporus", NC 167 (2007), p. 27, 6. Toned. An extremely interesting and unusual coin, illustrating a particular event within Byzantion's economic history. Countermark: nearly extremely fine / Coin: very fine.
It appears that this countermark was placed on Attic weight silver coins in order to allow them to continue circulating in Byzantion after the city had switched to a lighter, Ptolemaic, standard for its coinage. This, in turn, was caused by the tribute the city was forced to pay to the Galatians in Thrace, resulting in an ever increasing shortage of silver.
Byzantion. Circa 235-220 BC. Tetradrachm (Silver, 28 mm, 16.85 g, 10 h), originally struck c. 280-275, probably at Pella, under Antigonos II Gonatas; it was subsequently countermarked for use in Byzantion. Head of Herakles to right, wearing lion's skin headdress; below his ear, countermarked in a large, circular indent, ΠΥ above a galley prow to right, with a dolphin swimming downwards on the truncation of the prow. Rev. AΛEΞANΔΡOΥ Zeus seated left on backless throne, holding eagle on his outstretched right hand and long scepter in his left; in field to left, bunch of grapes; in exergue, monogram of ΣΚΕ. For the original coin: Mathisen 26. Price 590. For the countermark, see: M. Thompson, "A Countermarked Hoard from Büyükçekmece", MN VI (1954), type II, 48-52, and W. M. Stancomb, "Some Countermarked and Overstruck Hellenistic Coins from the Region of the Thracian Bosporus", NC 167 (2007), p. 27, 6. Toned. An extremely interesting and unusual coin, illustrating a particular event within Byzantion's economic history. Countermark: nearly extremely fine / Coin: very fine.
It appears that this countermark was placed on Attic weight silver coins in order to allow them to continue circulating in Byzantion after the city had switched to a lighter, Ptolemaic, standard for its coinage. This, in turn, was caused by the tribute the city was forced to pay to the Galatians in Thrace, resulting in an ever increasing shortage of silver.