Neutron texture and tomographic study of ancient Greek incuse coin production

Scott Olsen, Ken Sheedy, Talia Knowles, Vladimir Luzin, Ulf Garbe, Filomena Salvemini

Research output: Contribution to conferenceAbstractResearch

Abstract

In 2014 the Australian Centre for Ancient Numismatic Studies at Macquarie University teamed up with the Bragg Institute to try to solve a 2500 year old mystery. Shortly after the invention of money in Lydia in the late 7th century BC a number of Greek colonies began a unique coin minting method known as incuse coinage. In existence from around 600 BC in the cities of Southern Italy (modern Basilicata and Calabria), incuse coins were known for the image on the front of the coin also appearing on the back, but in reverse. The incuse coins are much thinner and much more precisely aligned and struck than contemporary Greek coins. With their abrupt disappearance after 150 years, little is known today about the minting technique used to produce these rare coins, though various theories have been proposed over the last century. Using the Neutron Beam instrument Kowari for Neutron Texture analysis, and Dingo for Neutron Tomography a series of 27 incuse and non-incuse coins has been studied over the last 12 months with the aim of understating the manufacturing process. Neutron Texture analysis of coinage from different Greek colonies indicates the incuse coins were made using a similar process and this process was significantly different to the standard coinage made on the Greek mainland at the same time. Neutron Tomography also indicates this. Tomography allows scientists to have a unique insight into the internal structure of a coin and has generated details on porosity and inclusions which cannot be obtained elsewhere. The most startling find is that a number of ancient coins believed to be pure silver are infact, mostly copper with a thin layer (0.4mm) of silver over the top. Tomography allows precise measurements of the thickness of the outer and inner layers and gives an idea as to their method of production.
LanguageEnglish
Pages55-55
Number of pages1
Publication statusPublished - 2015
EventAsia Oceania conference on neutron scattering (2nd : 2015) - Sydney, NSW
Duration: 19 Jul 201523 Jul 2015

Conference

ConferenceAsia Oceania conference on neutron scattering (2nd : 2015)
CitySydney, NSW
Period19/07/1523/07/15

Fingerprint

textures
tomography
neutrons
silver
inventions
neutron beams
Italy
manufacturing
inclusions
porosity
copper

Cite this

Olsen, S., Sheedy, K., Knowles, T., Luzin, V., Garbe, U., & Salvemini, F. (2015). Neutron texture and tomographic study of ancient Greek incuse coin production. 55-55. Abstract from Asia Oceania conference on neutron scattering (2nd : 2015), Sydney, NSW, .
Olsen, Scott ; Sheedy, Ken ; Knowles, Talia ; Luzin, Vladimir ; Garbe, Ulf ; Salvemini, Filomena. / Neutron texture and tomographic study of ancient Greek incuse coin production. Abstract from Asia Oceania conference on neutron scattering (2nd : 2015), Sydney, NSW, .1 p.
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abstract = "In 2014 the Australian Centre for Ancient Numismatic Studies at Macquarie University teamed up with the Bragg Institute to try to solve a 2500 year old mystery. Shortly after the invention of money in Lydia in the late 7th century BC a number of Greek colonies began a unique coin minting method known as incuse coinage. In existence from around 600 BC in the cities of Southern Italy (modern Basilicata and Calabria), incuse coins were known for the image on the front of the coin also appearing on the back, but in reverse. The incuse coins are much thinner and much more precisely aligned and struck than contemporary Greek coins. With their abrupt disappearance after 150 years, little is known today about the minting technique used to produce these rare coins, though various theories have been proposed over the last century. Using the Neutron Beam instrument Kowari for Neutron Texture analysis, and Dingo for Neutron Tomography a series of 27 incuse and non-incuse coins has been studied over the last 12 months with the aim of understating the manufacturing process. Neutron Texture analysis of coinage from different Greek colonies indicates the incuse coins were made using a similar process and this process was significantly different to the standard coinage made on the Greek mainland at the same time. Neutron Tomography also indicates this. Tomography allows scientists to have a unique insight into the internal structure of a coin and has generated details on porosity and inclusions which cannot be obtained elsewhere. The most startling find is that a number of ancient coins believed to be pure silver are infact, mostly copper with a thin layer (0.4mm) of silver over the top. Tomography allows precise measurements of the thickness of the outer and inner layers and gives an idea as to their method of production.",
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Olsen, S, Sheedy, K, Knowles, T, Luzin, V, Garbe, U & Salvemini, F 2015, 'Neutron texture and tomographic study of ancient Greek incuse coin production' Asia Oceania conference on neutron scattering (2nd : 2015), Sydney, NSW, 19/07/15 - 23/07/15, pp. 55-55.

Neutron texture and tomographic study of ancient Greek incuse coin production. / Olsen, Scott; Sheedy, Ken; Knowles, Talia; Luzin, Vladimir; Garbe, Ulf; Salvemini, Filomena.

2015. 55-55 Abstract from Asia Oceania conference on neutron scattering (2nd : 2015), Sydney, NSW, .

Research output: Contribution to conferenceAbstractResearch

TY - CONF

T1 - Neutron texture and tomographic study of ancient Greek incuse coin production

AU - Olsen, Scott

AU - Sheedy, Ken

AU - Knowles, Talia

AU - Luzin, Vladimir

AU - Garbe, Ulf

AU - Salvemini, Filomena

PY - 2015

Y1 - 2015

N2 - In 2014 the Australian Centre for Ancient Numismatic Studies at Macquarie University teamed up with the Bragg Institute to try to solve a 2500 year old mystery. Shortly after the invention of money in Lydia in the late 7th century BC a number of Greek colonies began a unique coin minting method known as incuse coinage. In existence from around 600 BC in the cities of Southern Italy (modern Basilicata and Calabria), incuse coins were known for the image on the front of the coin also appearing on the back, but in reverse. The incuse coins are much thinner and much more precisely aligned and struck than contemporary Greek coins. With their abrupt disappearance after 150 years, little is known today about the minting technique used to produce these rare coins, though various theories have been proposed over the last century. Using the Neutron Beam instrument Kowari for Neutron Texture analysis, and Dingo for Neutron Tomography a series of 27 incuse and non-incuse coins has been studied over the last 12 months with the aim of understating the manufacturing process. Neutron Texture analysis of coinage from different Greek colonies indicates the incuse coins were made using a similar process and this process was significantly different to the standard coinage made on the Greek mainland at the same time. Neutron Tomography also indicates this. Tomography allows scientists to have a unique insight into the internal structure of a coin and has generated details on porosity and inclusions which cannot be obtained elsewhere. The most startling find is that a number of ancient coins believed to be pure silver are infact, mostly copper with a thin layer (0.4mm) of silver over the top. Tomography allows precise measurements of the thickness of the outer and inner layers and gives an idea as to their method of production.

AB - In 2014 the Australian Centre for Ancient Numismatic Studies at Macquarie University teamed up with the Bragg Institute to try to solve a 2500 year old mystery. Shortly after the invention of money in Lydia in the late 7th century BC a number of Greek colonies began a unique coin minting method known as incuse coinage. In existence from around 600 BC in the cities of Southern Italy (modern Basilicata and Calabria), incuse coins were known for the image on the front of the coin also appearing on the back, but in reverse. The incuse coins are much thinner and much more precisely aligned and struck than contemporary Greek coins. With their abrupt disappearance after 150 years, little is known today about the minting technique used to produce these rare coins, though various theories have been proposed over the last century. Using the Neutron Beam instrument Kowari for Neutron Texture analysis, and Dingo for Neutron Tomography a series of 27 incuse and non-incuse coins has been studied over the last 12 months with the aim of understating the manufacturing process. Neutron Texture analysis of coinage from different Greek colonies indicates the incuse coins were made using a similar process and this process was significantly different to the standard coinage made on the Greek mainland at the same time. Neutron Tomography also indicates this. Tomography allows scientists to have a unique insight into the internal structure of a coin and has generated details on porosity and inclusions which cannot be obtained elsewhere. The most startling find is that a number of ancient coins believed to be pure silver are infact, mostly copper with a thin layer (0.4mm) of silver over the top. Tomography allows precise measurements of the thickness of the outer and inner layers and gives an idea as to their method of production.

M3 - Abstract

SP - 55

EP - 55

ER -

Olsen S, Sheedy K, Knowles T, Luzin V, Garbe U, Salvemini F. Neutron texture and tomographic study of ancient Greek incuse coin production. 2015. Abstract from Asia Oceania conference on neutron scattering (2nd : 2015), Sydney, NSW, .