You need to be more specific. There have not been any gold dollars released by the US Mint since 1889 for circulation (minus some minor collector editions before 1933) and there are no gold dollars dated 1978 struck by the US Mint. Instead you either have a gold plated 1978 dollar coin (which would just be worth $1) or you have a dollar coin issued by a different country or private mint.
because of the purchasing power of a particular country is increasing
2009 50 dollar gold piece 1oz worth money value
A 1978-D Eisenhower dollar has no silver in it and is only face value.
These coins are NOT rare and are worth face.
it is worth a dick
It's made of brass, not gold, and is worth one dollar.
One dollar.
One dollar, and there's no gold in it.
A dollar.
because of the purchasing power of a particular country is increasing
It's not made of gold, and it's worth one dollar.
One dollar, and there's no gold in it.
One dollar, and the coin contains no gold.
Gold was worth an average 193 dollars in 1978. A South African gold krugerrand was and is worth about 10 percent more that the present price of gold. A krugerrand in 1978 would have been worth about 212 dollars.
It is still worth 1 dollar
It's still worth one dollar.
The gold colored Presidential dollar is worth one dollar. These are commonly circulated coins, and contain no gold.