Unless the cashier is a coin collector, probably not. They won't know whether the coin is really gold or a replica, and they won't know if it is legal tender, and likely will not accept it.
It wouldn't be a good idea to spend gold on gas anyway, really. You could get much more than face value for an authentic $50 gold coin.
Other than coin dealers many jewelers buy gold and silver
1 oz
.50 AGW
To find the price of a coin, it much be determined what country the currency is from. The American 50 dollar Gold Liberty Walking Eagle coin can be purchased for roughly $1550.00 American.
Typically those types of coins are generally worth market value of gold. The 50 dollar coin is 1 troy ounce of gold, so therefore around $1400 as of late December of 2010.
$50
Please look at the coin again and post new question. The U.S. never released a $50 gold coin dated 1915.
The $50 Liberty is a bullion coin valued for the one troy ounce of gold it contains. Current price would be $1200 - $1400, depending on the spot gold market.
If the coin grades from VF-20 to AU-50 the value is $200.00-$250.00
it depends.. i know the pendants are over a grand though.
The 1989w $50.00 PF-70 DC coin retail list is: $2,130.00
if it real gold it can be from $50-$1000 depending on weightand condition .....hope this helped!