Abstract: A license plate cover system includes a base plate defining a first surface configured to face a vehicle. A second surface of the base plate is configured to face away from the vehicle. A side surface of the base plate connects the first surface with the second surface. The base plate includes protrusions extending from the side surface. A cover plate defines a first surface configured to face the second surface of the base plate. A second surface of the cover plate is configured to face away from the base plate. An inner side surface connects the first surface of the cover plate with the second surface of the cover plate. The cover plate includes recesses configured to receive the protrusions therein. The cover plate is configured to be removably coupled with base plate by securing the protrusions in corresponding recesses of the plurality of recesses.

Abstract: An article (e.g., a tire, a package, a label) having upon a surface thereof one or more identifying words composed of a plurality of letters chosen from an alphabet of distinctive letters. The letters, when uninverted, are readily distinguishable from one another upon comparison of the characteristic features of one letter with those of the remaining letters in the alphabet. In the particular embodiment illustrated, twenty-four of the twenty-six letters in the alphabet are invertible and form, when inverted, either the same letters or other letters of the alphabet. This allows uninverted words or groups of words to be selectively composed from the letters, which words, when inverted, form either the same words as or different words from the uninverted words.