There's two varieties for this coin. It can worth between 5$ to 500$ for a circulated coin. You can specify your answer with that :
http://www.coinsandcanada.com/coins-prices.php?coin=50-cents-1946&years=50-cents-1937-1952
A 1964 Canadian half-dollar has a value of approximately $12 Canadian dollars. This value is dependent on the current silver market.
50 cents
The 1946 Walking Liberty half is common and most coins are valued at $12.00-$15.00.
5 bucks
Unless it's in brand-new uncirculated condition, face value only.
Please turn the coin over and check the denomination on the back. It's a half dollar, not a dollar. There's more information at the question "What is the value of a 1946 US half dollar?"
Please post a new question with the coin's date.
No one dollar coins were made in 1946. The coin is a 1946 Walking Liberty Half Dolllar that is very common and most are valued at $7.00-$9.00
The value of an 1896 Canadian half dollar depends on its condition. For example, such a coin in good condition is worth around 11.79 US dollars while an uncirculated coin has a value of more than 500 US dollars.
There is no silver in the Canadian half dollar dated after 1967. If you have older coins (lucky you), the content is as follows: 1870 - 1919 92.5% silver 7.5% copper 1920 - 1967 80% silver 20% copper
Average retail value for a 1946-S BTW half in EF-40 is $16.00.
$80 to $5100 depending upon the condition of the coin.