These are beautiful old coins, Rachael. The fact that your coin is bent, however, will lower its price to gold bullion content alone. There will be no numismatic (coin collector) value over and above bullion value for bent coins.
Here are the statistics:
10 CORONA: 18 mm diameter, 0.098 troy ounces gold
20 CORONA: 20 mm diameter, 0.196 troy ounces gold
To find bullion value use a web site like kitco.com to find the up-to-the-minute price of gold. Then multiply that dollar amount by 0.098 for 10 coronas and 0.196 for 20 coronas. At the moment, kitco reports $1290 US dollars per troy ounce, so Rachael's coin is worth $1290 x 0.098 = $126 (Base value=BV). If you go to sell this coin to a gold dealer, he or she will charge you a commission for handling the transaction. For a single coin, a reasonable commission would be 20 to 40 percent. If you had 100 coins, the commission percentage would be lower.
Conder Tokens were minted in response to British coin shortages in outlying areas. They are named after James Conder who was an early collector and cataloged these interesting coins. Thousands of varieties of tokens were minted, this one is relatively rare, although rarity in this case does not indicate high value. The collector base for Conder tokens is relatively small, and that keeps prices low.
A good place to educate yourself on Conder tokens is ABC Coins and Tokens in Alnwick, UK. The monogram H M Co means 'Hibernia Mine Company' with partners Turner Camac, John Howard Kyan and John Camac.
Located 14 miles east of Frankfurt am Main, Hanau is the site of a Roman frontier settlement. Collectors seek nicely preserved specimens and pay decent prices to add them to their collections. The one in the picture sold for 340 euros (about $430 US dollars) by Westfälische Auktionsgesellschaft in a 2010 auction.
Below are some approximate catalog values for coins without scratches, stains, nicks, gouges, cleanings, and other damage.
Now these are really neat coins. All of them are made of copper, but the one in our picture has picked up some nice blue toning, giving it excellent eye appeal. You can buy them for very little money, but I don't think that will last forever. Coins from India will surely increase in price as modern communications works to expose more and more people to the beauty and intricacies of these coins.
There are three denominations which use the curved sword and vine wreath pattern:
That's Miss Liberty (LIBERTAD) on the front and a wreathed denomination (5, 10, 20, or 50 centavos) on the back. These coins are made of steel with a coating that contains nickel. They are worth face value in Argentina.
Collectors will buy these coins for their collections. When they do, they will pay a few US dollars for fully uncirculated specimens. All dates and denominations are roughly equal in value. The 1961 20 centavos is a slight bit rare, so a fully uncirculated coin might sell for $3 to $4.
The League of Nations granted Great Britain a mandate to govern Palestinian territories (the Bible Land of Canaan) in 1923. The mandate lasted until 1948 when the Jewish state of Israel declared its independence on the day before the British mandate was to expire.
Under the auspices of the British-lead Palestine Currency Board, 59 different coins were minted for circulation in Palestine during the period from 1927 through 1946. Each coin is tri-lingual, bearing legends in three languages: English, Arabic, and Hebrew. The 5, 10, and 20 mils denominations have a hole at the center. Other denominations have no hole. The 5 mils coins are minted in copper, while the 10 and 20 mils coins are minted in copper-nickel.
The 1957 5, 25, and 50 pesetas coins from Spain are ones that can get collector juices flowing. The vast majority of these coins are very common, low-value pieces. These coins are made of copper-nickel and are worth only face value. A collector might pay a few US dollars to add a fully uncirculated specimen to his or her collection.
ALL COINS EXCEPT THOSE DESCRIBED BELOW:
worn: less than $1 US dollar approximate catalog value
average circulated: less than $1
These coins are known as Spanish (Hispan) colonial coinage because they circulated freely in the many New World colonies of Spain. You can find essentially the same coins in Bolivia, Chile, Columbia, Guatemala, Mexico, Peru. The coins from Mexico carry the distinctive Mo or oM mint mark -- a small 'o' set over a large 'M'. Coins from Chile bear an So or oS mint mark for Santiago, Chile. There are many other mint marks, as explained below.