Not sure what your monitor size is ?
Monitor Size: Unknown
2 euro coin
New zealand 50 cent coin
American 5 golden eagle
500 yen coin
Canadian 25 cents
tiny bit smaller
It is almost similar to Singapore 10 cents coin
perfect at 18.5
It is perfect with a 20'' monitor.
Also Avalible At:http://pective.com/pic/3d-real-life-penny