Defenitly. Any coin with a gold content is worth way more than face value.
Depends.... is it official, government produced tender? Is it "gold-clad" or solid gold? If it is solid gold it may vary depending on the price of gold per once. If it is gold-clad (plated) it may not be worth any more than the $50.
what is a one troy ounce
how much is 111 g.m of gold worth
gold bars
Look for anything that is "Hypoallergenic". Gold is usually a good bet, but make sure it is real gold and not gold "clad" or "coated". Clad or coating will wear off and then you're in trouble.
total clear weight is approx 570.00 today
The U.S. doesn't make gold clad coins. If you have a Sacagawea or Presidential dollar with a golden color, it's actually made of brass and is only worth $1. Anything else you get, such as a gold-colored dime or quarter or penny, has been plated either for use in jewelry or as a novelty. The plating is extremely thin, often only a few atoms in depth. It would cost more to remove the gold than it's worth.
No.
That depends on the weight and purity of the bars. They will probably be stamped with relevant information. As of 19 December 2013, gold is worth $1,204.80 per troy ounce. Check the weight on the bars and do the math.
A gold clad coin isn't pure gold; it's a core of a different metal covered with a thin layer of gold. The gold layer can vary in thickness. It's not as valuable as solid gold coins but still has a gold appearance.
It is the same as gold plated.