This coin was struck in several varieties so you would need to have it inspected in person by a dealer or appraiser who handles Canadian Coins.
If it really is a silver dollar, there were two varieties: the 'Edmonton University Games' and the 'Toronto Sesquicentennial'. They weighed 23.3276 grams and were composed on 50% silver and 50% copper. The actual silver weight (ASW) is 0.3750 oz troy. At a spot value if $35 per oz, the silver is worth $13.13USD.
Canada actually issued a few different silver dollars in 1984, and each one catalogs for $14 or its silver value (.3750-ounce) - whichever is higher at the time.
The value of a 1984 Canadian proof dollar is about $12.
10000
About $20
The only US dollar coin with a date of 1984 is a commemorative Olympic Coliseum silver dollar and has a retail value of $16.00.
The US Mint did not issue an Abraham Lincoln silver dollar in 1984. Please examine your coin and then submit a new question giving more information about the coin.
Value of Canadian $2 bill
If the cent was found in circulation, it is only worth face value. If it is a "proof" that was purchased from the Canadian Mint, it is worth about 1.50 retail.
The 1984 Liberty Head Silver Dollar was minted in four locations. The CC for Carson City id the most valuable due to the few produced. The degree of wear and whether the coin was circulated affect the value of the coin.
There were no Australian Fifty Dollar notes printed in 1984.
As of Mar/11, the silver content is worth about $27. Because the value of the coin is due to the amount of the silver, proofs are not worth more. They are selling on eBay for about $30 including shipping but because of Paypal fees, eBay fees and shipping, you will get considerably less than the value of the silver.
$1650.00
About $56