Serial numbers for Ovation guitars typically appear on paper labels inside the body of the guitar visible through each instrument's sound hole. The labels are small and rectangular. They also often contain the model of the guitar and the location of its manufacture.
Ovation makes it easy for a guitar owner to determine the manufacture date of his guitar. The Ovation website lists all serial numbers and their corresponding dates of manufacture with three-digit serial numbers ranging from 1966 to 1973 and six-digit serial numbers occurring from 1972 to 2013. Adamas models, which were first manufactured in 1977, have a different numbering system.