These are modern coins and are worth face value. If you have a nice specimen, like the one in our photo, a collector would pay a few US dollars to add it to his or her collection.
The 1973 date is less common than the other dates. Catalog value for a 1973 is $20 if in fully uncirculated condition. With circulation, value falls to $5 or so.
Like all British coins, the reigning monarch appears on the obverse (the 'heads' side). King George VI appears in our picture, but your coin might be different. Queen Elizabeth appears after 1952.
Except for the penny dated 1946, all Australian pennies in this series are worth face value or just a tad more. The 1942 specimen in our example might sell for $1 or $2 US dollars because it is in nice shape and has acquired some attractive blue toning. Some collectors (like me!) really enjoy toned coins and are willing to pay a little more to get them. But not much more. BTW, most collectors do *not* prefer toning.
Britain issued these 2 and 2 1/2 shilling coins in silver for South Africa from 1923 to 1960. Like all British coins, the reigning monarch appears on the face, so your coin may have a different profile than George VI in our picture. The back of the coin looks the same throughout the years.
As always, value increases as age goes up and condition gets better. Older coins are worth more than newer coins, and coins with less wear and better eye appeal are worth the most. Coins cannot be worth less than their basic silver value, found by multiplying the silver weight in troy ounces by the current price of silver (see kitco.com).
1951 was the golden anniversary (50th) of the federation of Australia. A florin (2 Shillings) was released to commemorate the event. The obverse bears the usual Paget portrait of George VI while the reverse bears a design by William Leslie Bowles, a Victorian sculptor. His design was one of several considered by the treasury department at the time of the coin's release. It depicts a sword crossed with a scepter. Above the cross is what appears to be the Imperial State Crown of Great Britain while below it is the seven pointed Federation Star of Australia. Behind the sword and scepter is the Southern Cross, the constellation known as Crux. On the left of the reverse is the year 1901 and the right 1951 representing the 50 years since the federation of Australia.
Very nice design on this coin. Many Japanese coins show a phoenix, the magical bird. But this one shows a plain old crow. Nothing magical about that!
Issued in aluminum as World War II started to rage in Europe, these coins carry catalog values as follows:
worn: $1 US dollar approximate catalog value
average circulated: $2
well preserved: $3
fully uncirculated: $15
The catalog value jumps up for uncirculated, because very few uncirculated coins are available. Most are worn or damaged.
These are generally quite valuable coins and searchable by collectors. They come from the Danish West Indies (the US Virgin Islands today) and show a crowned shield of Denmark with ruler King Christian IX and denomination within wreath on the other side. Coins dated before 1868 look the same, but bear the name of Frederik instead of Christian.
Typical catalog values run like this. Coins dated 1879 are especially valuable.
1 CENT 1859, 1860, 1868, 1878, 1883
According to 'Google Translate,' the inscription reads 1964 1384 May 15, 1964 keepsake divert the course of the River Nile ~ United Arab Republic 50 penny which, no surprise, is precisely what this coin is in English, an Egypt 50 piatres commemorating the Aswan Dam diversion of the Nile River. The coin also comes in 5, 10, and 25 piastre denominations:
5 PIASTRES: 18 mm diameter, 0.058 troy ounces silver
10 PIASTRES: 23 mm diameter, 0.116 troy ounces
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.