
While the provided context was more interested in showing off a website menu than spilling the metallic beans, the secret of your 1918 Walking Liberty half dollar is well known in the coin world.
That beautiful piece of American history isn't just a pretty face. It's packed with a respectable amount of precious metal. Specifically, a 1918 Walking Liberty half dollar is composed of 90% silver and 10% copper. The copper was added to give the coin some durability, because pure silver is a bit of a softie and wouldn't have held up to the rough and tumble life of currency.
When you do the math, this composition gives the coin a total silver weight of 0.36169 troy ounces. This is what gives the coin its "melt value," which is the baseline worth based on the current price of silver. Of course, since your coin is a survivor from the World War I era, its value as a collectible is almost certainly higher than what it's worth in a melting pot. So, it's best to appreciate its silver content from afar and keep the blowtorch in the garage.


