Thyrrheium (Roman Republic), silver, didrachms (94 BCE)
From SILVER
94 BCE - 94 BCE Silver 368 kg
Description
| Obverse: | Head of Athena Parthenos right, wearing crested Attic helmet |
| Reverse: | ΘΥΡΡΕΙΩΝ (Greek).Athena Promachos striding right, wielding spear and holding forth shield on outstretched arm, in upper field, ?E-ON, [[Reverse description::in left field, monogram above [F]ATNI/A?A in two lines]], in right field, club |
Mint and issuing power
| Mint: | Thyrrheium | Ancient region: | Acarnania | Modern country: Greece | Authority: | Roman Republic |
Chronology
| From | 94 BCE | to | 94 BCE | Period: Hellenistic 323-30 BC 
|
Physical description
| Metal: | Silver
|
Median weight in grams | 7.90 | Denomination: | didrachm
|
Standard: |
Image
References
| Die study reference: | "[[Die study reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]1Liampi 1994c | ||
| Coin series reference: | |||
Obverse dies distribution
| Frequency ᵖ | Number of obverses ᵖ (o) | % (o) | Number of coins (n) | % (n) | Die name |
| 4 | 2 | 100 | 8 | 100 | |
| Total | 2 of 2 | 100 | 8 of 8 | 100 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 2 | Number of singletons (o1) ᵖ | |
| Number of reverse dies (r) | 6 | Number of coins (n) | 8 |
| Coins per obverse die (n/o) | 4 | Coins per reverse die (n/r) | 1.33 |
| Reverse per obverse ratio (r/o) | 3 | Percentage of singletons (o1) ᵖ | % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 2.33 | Coins struck if 20,000 as average productivity per die ᵖ | 46,600 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 2.67 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00017 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | % | Die productivity if survival rate 1/2,000 ᵖ | 6,866.95 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | 368 kg <br /> 368 kg | Die productivity if survival rate 1/5,000 ᵖ | 17,167.38 |
Remarks
Most likely one single workstation
References
- ^ Liampi, Katerini (1994), "Thesauros nomismatôn apo to Thurreion tis Akarnanias", Figos. Timètikos. Tomos gia ton katigiti Sôtiri Dakari, Ioannina, p. 267-277
