Reply #9: Both my partner and myself have worked handling money. [View All]

[Lyric]

My partner was actually an office manager at a grocery store, and handled thousands every day. The idea that a "brown" mark means that it's counterfeit isn't entirely correct.

If the pen makes a *dark* brown or black mark on a bill, it's probably a counterfeit. A light brown or amber mark means that it's probably legit. Just saying "brown" is misleading, because perfectly legitimate bills will be stained a light brown by the pen. For anyone who isn't sure, just remember--a DARK-colored brown or black mark is something to worry about, not a light one.