Look on the reverse. The side without the King or Queen's head.
There were twelve predecimal Pennies in a Shilling, as used by many of the British Commonwealth countries. The British Shilling converted to 5 New Pence at the changeover to decimal currency. The Australian and New Zealand Shilling converted to 10 cents at the changeover to decimal currency.
Most British One Shilling coins from the past 100 years would not be considered rare. For more detail, you would need to provide the date on the coin.
The Tanzanian shilling is now so devalued by inflation that it would be difficult to find a one-shilling coin these days. But back in the day when a shilling had some buying power, they had an arm holding a torch on one side and a picture of the President ("Rais") on the other. Neither of these are Masonic.
Cathline shilling
The plural of shilling is shillings.
John Shilling has written: 'The trial of John Shilling'
Because there are soapy clues find them
About the same as a british shilling 24 cents a shilling
Ivy Shilling's birth name is Ivy May Shilling.
There are 4 Farthings (Fourthings) in a Penny, and 12 Pennies in a Shilling, therefore there are 48 Farthings in a Shilling.
Depending on the two digits missing from the date and the condition, it could be worth anything from £1 to £400 GBP.
It is a little difficult to read because of the Gothic script and the size, but the date is in Roman numerals on the obverse, ie. mdcccli = 1851.