Frankly, I wouldn't expect superlative results from a sub-$100 camera in any event, especially one with no manual control. With that said, you'll maximize your chances with this one by using Super Macro mode, the 2-second timer, highest image quality, Spot focusing, Auto white balance and the Program Auto mode.
You'll have the ability with these settings to achieve focus at as little as 2" from a coin. Do not use the zoom and vary the camera's distance from the coin as your lighting might demand. You'll likely have to compromise the final size of the shot for that reason - lighting is tough at a lens distance of 3" - and your only ability to affect the final brightness of the shot is through exposure compensation.
The "baggage" of using an inexpensive camera for coins is the intensity of effort required for you to find its' "sweet spot." You've a lot of experimentation ahead of you.
You'll have the ability with these settings to achieve focus at as little as 2" from a coin. Do not use the zoom and vary the camera's distance from the coin as your lighting might demand. You'll likely have to compromise the final size of the shot for that reason - lighting is tough at a lens distance of 3" - and your only ability to affect the final brightness of the shot is through exposure compensation.
The "baggage" of using an inexpensive camera for coins is the intensity of effort required for you to find its' "sweet spot." You've a lot of experimentation ahead of you.




















