One of these stamps is a genuine stamp and the other(s) is a forgery. Can you tell the difference? If you are having trouble, see the "hints" and answer below.
Genuine - Shading is present under the nose and eyes. Eisenhower lettering is fuller with squared off letters. Perf 11. Forgery the shading is missing and the Eisenhower lettering has many small breaks in it. Perf 12 1/2.