All regular issue plates in Germany have seals .
State seals are generally Black on silver.
Post 1994 State seals are much larger and more colorful. A round colored and dated seal on the Back plate indicating the vehicles passing of a safety test. A colored and dated hexagonal seal on the front plate indicating the vehicles passing of an emission test. A seal on a temporary plate from the town of issuence. These seals are generally either black on red or black on blue.