- UK Pigpen can be distinguished from the original by the die-cut.
- But as UK die-cut variations go, this one is a bit complicated.
There are three basic shapes, with variations on each (see image to the right for the terminology).
- The "Diagonal" appears to be strictly U.S.
- The "Sharp" appears to be strictly UK
- The "Square" may come in both U.S. and UK with subtle differences.