More information is needed. Several countries issued 25¢ coins in 1947. Please look for questions like "What is the value of a 1947 US quarter?", "... Canadian quarter?", etc.
It's still worth 25 cents in Canada.
The Silver value is $3.05 as of today 3-22-10
Nickel 3-cent pieces were only struck from 1865 to 1889. If you instead have a silver 3-cent piece with that date, its value would be in the range of $25 to $100 depending on condition.
copper
More information is needed. Several countries issued 25¢ coins in 1942. Please look for questions like "What is the value of a 1942 US quarter?", "... Canadian quarter?", etc.
25 cent
£2.50
25 cents
25 cents
One half dollar (50 cent piece) and two quarter dollars (25 cent each piece)
28 cents
Please post a new question with the coin's date. Quarters have been minted in Denver for over a century.