These old coins from China are quite interesting. The dragon is one of the favorite patterns. Conversion of the monetary units goes like this:
3.6 candareens = 5 cents
7.2 candareens = 10 cents
1 mace and 4.4 candareens = 20 cents
3 mace and 6 candareens = 50 cents
7 mace and 2 candareens = 1 dollar
The value of these coins is quite high, especially in well preserved condition.
Nowadays not many people remember when silver coins actually circulated in America. Up to 1964, our silver coins ~ dimes, quarters, half dollars ~ were made of actual silver. A full 90 percent of each coin was pure silver. The remaining 10 percent was copper. Then, in 1964, the Federal Government decided, with the rest of the world (pretty much), to do away with precious metal in coins and strike them out of cheap alloys. Coins minted from 1965 until now have zero silver content. Dimes, quarters, and half dollars are made of copper with a thin clad layer of nickel.
Thomas Fuller, the prolific English author, once said
Fools' names, like fools' faces, Are often seen in public places.
These are nice coins from the Netherlands. The straight line patterns are quite distinct. 1, 2 1/2, and 5 gulden denominations were issued until the time that Euro coinage took over in 2001.
1 GULDEN: 1982 to 2001, nickel
2 1/2 GULDEN: 1982 to 2001, nickel
5 GULDEN: 1987 to 2001, bronze clad nickel
Some of the later date coins (post-1990) have lower mintages and catalogers have reflected this in pricing, assigning catalog values as high as $10 to $15 US dollars. We have not seen such high prices in actual auction results, so CoinQuest's best estimates of value are low, as follows:
Don't use metal polish to remove the spots, Meutia. That will ruin the value of your cool British coin. Be sure to handle your coin by its edges only. No fingerprints allowed!
It sounds like you have a gold sovereign from 1914. It could be a half sovereign, because the two coins look alike, only their size is different:
HALF SOVEREIGN: 19 mm diameter, 0.118 troy ounces gold
SOVEREIGN: 22 mm diameter, 0.235 troy ounces gold
The unusual fish-like pattern is a 'good luck' Taku. This symbol appears on all coins from the newly federated States of West Africa. The 1, 5, 10, 25, 50, and 100 franc coins are made of nickel and brass, so these coins are worth face value. Collectors might pay a small amount more for an uncirculated specimen.
It seems that some of these coins have two small fishes at the 1:00 position on the taku side. Other coins do not have these fish. At least for now, the presence or absence of the fish does not affect value. This can been seen by comparing auction prices on eBay.