1934A $500 Mule

It's a mule because the plate serials are different sizes: the 2 on the face is macro, and the 6 on the back is micro.

The BEP never made $500 macro backs, so all Series of 1934A $500 FRNs are mules. Series of 1934 $500 FRNs will not be mules because the face plate serials on those plates were also micro.

@GoldFinger1969 said:

@Jamericon said:
It's a mule because the plate serials are different sizes: the 2 on the face is macro, and the 6 on the back is micro.

What "6" ??? I don't see anything other than "500" on the back.

You see Jamericon has exceptional vision. While most of us see 20/20, he sees like 10/10. This enables him to read those tiny little numbers in the lower right corner on the front and back. He sees them so well he can read the front number as a "2" and can tell that it is a couple millimeters larger than the back number "6". Upon this revelation he deems the front number a macro and back number a micro. But when he's not using his superpowers, he reads them off the grading label and uses his knowledge that all 1934A $500s are mules because the back plates were made the same for series 1934 $500 notes (micro).