There's a Peace dollar but not a war dollar. Please see the Related Question.
1 Dollar "Peace Dollar" 1921-1935 Commemorative: End of World War I Silver (.900) - 26.73 g - ø 38.1 mm so 90% is silver of the 26.73gm total weight
It's worth about a dollar just for the silver.
Average current market value for the 1991 PF Koren War Memorial silver dollar is $17.00-$23.00 depending on the actual grade of the coin.
The 1921 Peace dollar was minted to commemorate the end of World War I.
The coin is a very common date " War Years" Walking Liberty half, unless it's a super high grade coin the value is just for the silver, about $10.00
To clear things up, Morgan dollars were minted from 1878 to 1904 and in 1921, and the Peace Sign was created during the 1960s to protest the Vietnam War. What you have is simply called a Peace dollar; it honored the end of WWI. Please see the Related Question for more information.
1945 makes it a silver "war" nickel. It's currently worth a bit over one dollar for the silver content alone, and possibly more depending on condition.
The dollar value of a twenty-dollar 1944 war bond, when redeemed at maturity, would typically be $25. War bonds were sold at a discount and could be redeemed for their face value after a set period, usually ten years. However, if you were to assess its value today, it would vary based on collector interest and condition, potentially exceeding its original redemption value.
In 1770, the value of the dollar was significantly different from today, primarily due to the different economic conditions and the gold and silver standards of the time. The Continental Congress issued the Continental dollar during the Revolutionary War, which was initially pegged to the value of the Spanish dollar, worth about 1/20 of a troy ounce of silver. However, the Continental dollar depreciated rapidly, leading to its worth being much less than a traditional dollar. Overall, it's estimated that a dollar back then had the purchasing power equivalent to about $30-$35 today, but this can vary based on the specific goods or services considered.
The dollar
Not worth much. Face value or depending how much silver and grade of silver it was made of and from. Mexican money is pretty much worthless as is many other countries around the world. Russia, Canada, examples --Monies is worth only face value.
Most halves from the WWII era are common among collectors. Anything that shows evidence of wear will mostly be worth its silver value, around $7-8 as of 03/2010.