I am a great believer in tripods but have taken most of my photos using a copy stand instead. My point is any support is better than none. To prove this once, I put my wife's point and shoot on a plastic food container which I cut to accept the camera on the top and allow access to the coin on the
side. The size and details of the cuts will depend on your camera and coins. I prefer coins placed a
bit above the background allowing it to be out of focus but you may not. I accomplish this using a dowel rod cu to the size that places the coin where I want it. Photo below.
I also have constructed a small stand out of scrap
wood that supports the camera. You decide how far you need to be from the coins and cut accordingly. Every camera is different but most zoom lenses will have a range that is useful. It is often easier to fix the camera solidly and make adjustments in distance by moving the coin. This is easily done if you have several dowel rods of different lengths.
Heavy cameras like DSLR's don't
work as well with such cobbled together rigs but your camera, like my wife's, is light and can be held securely with some ease. If your camera has a way of releasing the shutter without touching the camera (self timer or remote release) this will
help avoid motion blurred photos.