Dicaea, silver, triobols (Heracles/incuse square) (540-490 BCE)
From SILVER
540 BCE - 490 BCE Silver 183 kg
Description
| Obverse: | Head of bearded Heracles, right, wearing lion skin. |
| Reverse: | Quadripartite incuse square with uneven surfaces. |
Mint and issuing power
| Mint: | Dicaea | Ancient region: | Thrace | Modern country: Greece | Authority: |
Chronology
| From | 540 BCE | to | 490 BCE | Period: Classical 480-323 BC 
|
Physical description
| Metal: | Silver
|
Median weight in grams | 1.90 | Denomination: | triobol
|
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.]]1Schönert-Geiss 1975, p. 25, n° 19-20 | ||
| Coin series reference: | "[[Coin series reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]2RQEMAC, n° 126b | ||
| Coin series web reference: | |||
Obverse dies distribution
| Frequency ᵖ | Number of obverses ᵖ (o) | % (o) | Number of coins (n) | % (n) | Die name |
| 1 | 1 | 50 | 1 | 33.33 | 2 |
| 2 | 1 | 50 | 2 | 66.67 | 1 |
| Total | 2 of 2 | 100 | 3 of 3 | 100 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 2 | Number of singletons (o1) ᵖ | 1 |
| Number of reverse dies (r) | 2 | Number of coins (n) | 3 |
| Coins per obverse die (n/o) | 1.5 | Coins per reverse die (n/r) | 1.5 |
| Reverse per obverse ratio (r/o) | 1 | Percentage of singletons (o1) ᵖ | 50 % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 4.81 | Coins struck if 20,000 as average productivity per die ᵖ | 96,200 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 6 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00003 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | 66.67% | Die productivity if survival rate 1/2,000 ᵖ | 1,247.4 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | 183 kg <br /> 183 kg | Die productivity if survival rate 1/5,000 ᵖ | 3,118.5 |
Remarks
