Yes, you'd like to diversify your portfolio or perhaps you're just interested in collecting some of the fascinating gold coins for their numismatic value and appeal. The bottom line? Don't get ripped off!

First, identify the coin you'd like to purchase. Take note of the quality, or grade, and the weight of the precious metal content. Only buy from sellers who post good pictures of the exact coin being sold! If the coin is professionally graded (or "slabbed"), it carries the authenticity guarantee of the grading service. Also, there are three general categories; circulated (sometimes valued for metal content only), uncirculated (carries a small to medium premium above spot prices), and proof (usually carries a large premium above spot prices).

Second, use the advanced search feature on eBay and search closed auctions for the same coin. This works well and will provide a better idea of the price range this coin should sell for. Keep in mind the grade of the coin, the weight of the precious metal content, and the fluctuations in market price.

Third, check the market price. There are several websites that provide live "spot" prices for gold and other precious metals. Use the "New York spot price" or "London spot price" to reasonably gauge content value. Keep in mind these figures vary daily and you should view monthly (or longer) charts for trends in prices.

Fourth, use a reputable online coin price guide like the one from Professional Coin Grading Service. This will give a likely dealer sales price for a certified and graded coin. Keep in mind that PCGS and NGC graded coins fetch the most trust because of their track record and adherance to standards. Most of the time, but not always, coins are bought and sold on eBay at a discount to the prices found in these price guides.

Fifth, make sure the person you're buying from has a very positive feedback rating. If they guarantee the coin they're selling is authentic, that's even better!

Sixth, place your bid and pay extra for the insured shipping if possible. At least request that the package is tracked and you receive a tracking number. My recommendation for the best possible way to ship gold and other precious metals?; USPS Registered/Insured mail, though the cost is only reasonable on higher value auctions.

Good luck and best wishes. Gold coins are wonderful collectors items and easily liquidated in emergencies. They truly are a "universal" currency!   : )