---
title: "Greece 2025 Mathematicians Eratosthenes Silver Proof coin"
url: "https://www.coinsntreasures.com/greece-2025-mathematicians-eratosthenes-silver-proof-coin/"
type: "product"
brand: "Bank Of Greece"
sku: "4387"
model: "4387"
price: "130.00€"
currency: "EUR"
availability: "in stock"
categories:
  - "WORLD COINS"
  - "EURO €"
  - "GREECE"
  - "GREECE"
image: "https://www.coinsntreasures.com/image/catalog/old/product_images/k/201/greece-2025-mathematicians-eratosthenes-silver-proof-coin-22265-51678.jpg"
store: "coinsntreasures.com"
language: "en-gb"
updated: "2026-07-27"
---

# Greece 2025 Mathematicians Eratosthenes Silver Proof coin

- **Price:** 130.00€ incl. VAT
- **Availability:** in stock
- **Brand:** Bank Of Greece
- **Model:** 4387
- **Category:** WORLD COINS, EURO €, GREECE, GREECE
- **Shipping:** free, delivery 1-3 business days to GR
- **Returns:** 14 days, return shipping paid by the customer
- **Buy:** https://www.coinsntreasures.com/greece-2025-mathematicians-eratosthenes-silver-proof-coin/

## Description

Greece 2025 Mathematicians Eratosthenes Silver Proof coin

**Denomination:** €10
**Diameter:** 40 mm
**Weight:** 34.10 gr
**Edge:** plain
**Material:** silver (Ag) 92.5%
**Packaging:** coin box with certificate of authenticity
**Maximum issue:** 2,000 pieces
**Minting quality:** proof
**Coin designed by:** G. Stamatopoulos

Eratosthenes (276-194 BC) was a Greek mathematician, geographer and astronomer. He was born in Cyrene, Libya, and lived in Alexandria, Egypt, where King Ptolemy III appointed him head of the Library of Alexandria. His most celebrated scientific achievement was the measurement of the circumference of the Earth. In an ingenuous experiment that is re-enacted by students worldwide every year, he estimated it at 252,000 *stadia* , off the actual value (40,075 km) by just -2.4% or +0.8%, depending on the *stadion* unit used (155-160 m). He also calculated the distance from the Earth to the Moon and to the Sun, again achieving close approximations. Eratosthenes was the founder of scientific chronology, starting from the Trojan War, in his *Chronographies* and *Olympic Victors* . Other major works included his *Geographica* – he is actually credited with coining the term “geography” – and *Catasterismi* (on constellations).

## Specifications

| Attribute | Value |
| --- | --- |
| Weight | 0.07 Κ |

## FAQ

### What is Greece 2025 Mathematicians Eratosthenes Silver Proof coin?

Greece 2025 Mathematicians Eratosthenes Silver Proof coin.

### Which brand makes Greece 2025 Mathematicians Eratosthenes Silver Proof coin?

Greece 2025 Mathematicians Eratosthenes Silver Proof coin is made by Bank Of Greece.

### What are its main specifications?

Denomination: €10. Diameter: 40 mm. Weight: 34.10 gr. Edge: plain. Material: silver (Ag) 92.5%. Packaging: coin box with certificate of authenticity.

### Is it available?

Yes, Greece 2025 Mathematicians Eratosthenes Silver Proof coin is in stock and can be ordered online from coinsntreasures.com.

### What is the product code?

The code is 4387.

## Images

![Greece 2025 Mathematicians Eratosthenes Silver Proof coin](https://www.coinsntreasures.com/image/catalog/old/product_images/k/201/greece-2025-mathematicians-eratosthenes-silver-proof-coin-22265-51678.jpg)
![Greece 2025 Mathematicians Eratosthenes Silver Proof coin 2](https://www.coinsntreasures.com/image/catalog/old/product_images/q/434/greece-2025-mathematicians-eratosthenes-silver-proof-coin-22604-25221.jpg)
![Greece 2025 Mathematicians Eratosthenes Silver Proof coin 3](https://www.coinsntreasures.com/image/catalog/old/product_images/b/971/greece-2025-mathematicians-eratosthenes-silver-proof-coin-22605-73511.jpg)
![Greece 2025 Mathematicians Eratosthenes Silver Proof coin 4](https://www.coinsntreasures.com/image/catalog/old/product_images/s/583/greece-2025-mathematicians-eratosthenes-silver-proof-coin-22603-24809.jpg)
![Greece 2025 Mathematicians Eratosthenes Silver Proof coin 5](https://www.coinsntreasures.com/image/catalog/old/product_images/f/177/greece-2025-mathematicians-eratosthenes-silver-proof-coin-22602-84523.jpg)

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