How do you know if a gold coin or bar is real and pure?

I've been watching some gold coins and gold bars. What should I look for to ensure that are pure gold?

When a bar of gold bullion comes in a sealed container for each piece – refers to 1 oz (this name is set to your wallet). Each piece has been rehearsed. If you open it should again be tested. The bars are also one of a handful of mints. Each pair has its "own number serial, forging and mint stamped on it. The coins are a little different. 1 of usually about 90% to 92% vs 99.9% pure gold to a bar. 2nd you are buying the artisty, and the desire of people of a certain pattern. If they do not come in a protective sleeve tested – then you need to do that is analyzed. Gold is more difficult to sell if the item has been removed from their "protective sleeve analyzed. Shipping is very easy – the U.S. Postal Service has high value items. According to one secretary … loss or poor placement of an insured item highvlaue is one of the only ways to lose your job … "At the Office Post.

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