Lettering Inverted

2007-P John Adams Double Lettering Inverted Error NGC Click Here For Details

2007-P JOHN ADAMS $ MS65 PCGS MINT ERROR DOUBLE EDGE LETTERING INVERTED Click Here For Details

2007 Adams Dollars NGC MS64 Inverted AND Doubled Edge Lettering – CHERRY CASE! Click Here For Details

2007 Adams Dollar Dbl. Edge Lettering Inverted NGC MS65 Click Here For Details

2007-P Adams Presidential Dollar – Double Edge Lettering Inverted NGC MS64 Click Here For Details

2007 P JOHN ADAMS PCGS MS64 DBLD EDGE LETTERING INVERTED MINT ERROR Click Here For Details

Looking through Cylindrical lenses?

Why are blue letters inverted but red ones aren’t?

Its a trick. Some letters are the same shape when upside down, and others are not. B, D, E, H, I, O, etc
I do this one in my Science classes.