Le centime... I think. Though they now have the euro, that was the equivalent of a penny in "francs".
'sou' (also in the spelling form 'sol') was one of the smallest old French coins from the late Middle Age. The word is still existing in popular parlance in expressions as "avoir des sous" (to have money).
It depends on the year, condition and denomination of the coin. It could be as little as a few cents(for a common low denomination coin in circulated condition), or as much US$600 (for a large gold commemorative coin).
A French coin worth 3 deniers would be a low-value coin from the medieval period. Deniers were the primary currency in France during that time, and a coin worth 3 deniers would have been of small denomination, typically made of copper or silver. The exact value in modern terms would be difficult to determine as it would depend on various factors such as the condition and rarity of the coin.
No. A coin denomination as low as Threepence would not be minted in gold. In 1915 they were made from 92.5% silver.
Unless the coin is in mint uncirculated condition, do not bother. These coins are still potentially in circulation and are worth 20 cents. Foreign Exchange offices will not exchange low denomination coins.
My guess is that if you looked more closely at the coin you'd see that the motto is "Liberté, Egalité, Fraternité", the denomination is centimes, not cents, AND the country is "République Française" So, what you have is a low-denomination coin used in France prior to adoption of the euro in 2002. At that time, 20 cts was worth about 3¢ U.S.
It very possibly is illegal as most countries do not like people modifying their currency. I very cautiously suggest that if you are doing it once for personal use and with a low denomination coin, they will possibly not view it too seriously.
In 1976, Greece issued a 2 drachma coin with the head of goddess Athena. These coins are usually worth minimal value due to their low denomination and common circulation. The value of the coin may vary, but it is typically worth its face value or slightly more to coin collectors.
This coin is from Greece - what you are reading as "eaahnikh ahmokpatia" is actually the Greek words "ΕΛΛΗΝΙΚΗ ΔΕΜΟΚΡΑΤΙΑ" which are pronounced "(H)ellenik(eh) Democratia" and mean "(the) Greek Democracy". To value the coin, you would need to know its denomination and condition.
one is fron one cent, the D means delaware..........................................................................................The 'd' in the British penny goes back to ancient Rome - from the word denari which was a low denomination Roman coin.
Skilling
Russia does not use cents or dollars, it uses rubles and kopecks. It's more likely that your coins are in rubles because the kopeck is 1/100 of a ruble and has very little value so low-denomination coins are not often used. In any case it's not likely that your coin is worth a huge amount because as of early 2011 the ruble is trading at roughly 3¢ US. If you need a specific please check your coin again for its denomination and post a new question (don't add to this one). The denomination will be in the Cyrillic alphabet: рубль = ruble копе́йк = kopeck