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.
The weight of a 50-dollar coin can vary depending on the country and the specific coin design. For example, in Canada, the 50-dollar coin, often referred to as the "Gold Maple Leaf," weighs 31.1 grams (1 ounce) and is made of pure gold. In other countries, the specifications may differ. Always check the specific coin's details for accurate information.
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.
Please look at the coin again and post new question. The U.S. never released a $50 gold coin dated 1915.
$50
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