1. Added and embossed mintmarks
2. Cast
3. Die struck
4. Electrotypes
5. Spark erosion
6. Plated
7. Altered dates and varieties

The counterfeiter seeking to produce the largest quantity of good quality, counterfeit coins would certainly choose to strike them using dies. Most of his time would be spent preparing the die, but once the die is finished the counterfeiter is free to make as many examples as he wants, each of reasonably good quality. However, this method also takes the most talent and is more costly to produce.