"It's an interesting thing to collect plates," said Steve Johnston. License plates hang high on Johnston's garage walls. He has nearly 20,000 collected so far and began his hobby back in the 90s. "Well I had a 1916 Model T and I decided I wanted a license plate and I really liked it, it was a porcelain plate. Porcelain bond at the metal has the state seal," he said. Johnston has every state plate imaginable, dating back to the early 1910s when the state seals were imprinted on them.