Scott 502 Counterfeit Perf

PF can write a cert however they want. The way they do it with misidentified stamps is terrible. This is one reason I prefer PSE for certifications.

Pardon me for asking, but what is the difference between re-perfed and counterfeit perf?

Reperf refers to the practice of adding perfs to a straight edge stamp ... or improving the appearance of existing perfs on a stamp. There is no attempt to alter the stamp identification. That said, many attempts to enhance a stamp's image are intended to deceive potential buyers.
Counterfeit perfs are an attempt to fraudulently alter a stamp's identification. This is often done to mimic the rare compound perfs on some early 20th century U.S. stamps.