Circles Personal Checks are a whimsical print of circles in four different color patterns from pink to green to orange to blue. Circles galore. Circles are simple and yet so symbolic. People are fascinated by circles. There is the circle of life, and a pie is a circle and everyone likes pie… which brings to mind the Greek number pi=3.14159 which is used to determine the circumference of a circle, and there is an example of circular thinking. Circles Personal Checks are available in single and duplicate check format. Matching address labels and a coordinating checkbook cover are also available.