For your consideration, here is a 1980 Iowa Mini License Plate Post Cereal Giveaway, no. CST-218.  It has some wear, scratches and some light bends to it.  It measures 4 3/4 by 2 inches.  It will be mailed in a bubble mailer with foam core stiffeners.  Item pictured is the actual item up for sale and comes from a non-smoking household.  (390.813j-.4bx2)