À réal coin is worth à round 50000 €
Yes the Louis was a coin. It was created by Louis XIII in 1640 in golden and silver version. The golden Louis was also called écu d'or (golden ecu). This currency had been used until the French revolution. After the revolution some coins (franc germinal or The Napoléon) were still wrongly called Louis.
Unfortunately, without more information about the coin (such as its condition, mint mark, and any other distinguishing features), it is difficult to provide an accurate value. You may want to consult with a professional coin dealer or appraiser for a more precise evaluation.
50 cents
It seems like the coin contains Latin words that say "In fidens non movetur," which translates to "It does not move with trust." The numbers 1640 likely indicate the year the coin was minted.
There are quite a few variants of this coin, with significantly different designs, issued over a period. The following is a very broad estimate covering all variations. An English 1640 Shilling, circulated but still in good condition, might fetch anything from £35 to £4,500 GBP. A reputable coin dealer will be able to make a positive identification of your coin and give an accurate valuation.
A British 1640 silver Threepence (Charles [1]), circulated but still in good condition, might fetch anything from £45 to £150 GBP. The values quoted are the best possible for the best specimens in their grades, but may be significantly lower due to varying demand for the coin and the prevailing economic climate. A reputable coin dealer will be able to give a more accurate valuation based on inspection of the coin.
150 bucks i sold mine at an auction
This should be a pattern, with the word "ESSAI" in stead of the date? If so, this is a good coin, struck in 1830: - in gold: about 1200 dollars - in tin: about 150 dollars - in guilded cupper (uniface), about 120 dollars. An official 10 francs-coin has never been struck during the reign of Louis Philippe I.
The value of a silver coin is always changing because the value of silver is always changing. See the related link below for a silver coin value calculator. This does not give the actual value of the coin but it does give the value of the metal used to make the coin. This is know as the melt value.
the smallest value of a coin is a penny.
intrinsic value If a coin had value because of its metal content, you would refer to the "bullion value" or the "melt value" of the coin, as versus the "numismatic value" that a coin which was rare or in exceptional condition would have.