How do you judge the quality and therefore value of a gold coin? All coins, including gold coins, have a grading system.
The more you know about the grading system the better armed you will be in deciding which coins you wish to purchase and to get the best purchase value for yourself, as well as how much your present coins are worth and how much you can sell them for to obtain the highest return on them.
The grading process includes the strike of the coin or, in other words, how well pronounced is the stamped design on the coin.
Is it flat, raised, worn, detailed? All of these features have an effect on the coin's worth.
Next is the surface presentation of the coin.
This is directly related to the number of markings, scratches and scuff marks on the surface of the coin and their individual placements.
The luster of the coin also comes into play as to its value.
Coins can have a frosty appearance, a satiny appearance, be shiny, etc.
Though the luster appearance may not have the greatest effect on the value of the coin, it is important to note it's luster as some clientele may prefer a certain luster and, in turn, will pay more for their desired appearance.
Finally there is the appeal the coin has to one's eye.
A coin that is far more appealing in appearance will obtain a higher price.
This can be very subjective.
Finally, if you want to turn your gold coin selling hobby into a full fledged business you will need to find a good, reliable, and honest source for obtaining your collection.
You must learn each of your customer's preferences in the types of coins that they desire in order to locate those coins and cater to their desires.
You will need to keep up with the price of gold in the marketplace as it can fluctuate rapidly in very short spans of time.
And, perhaps, most essential in today's world is that you establish a presence on the Internet.