Crayola is often contacted for specific information regarding the age of Crayola products manufactured in our earlier years. While we do not have an easy, accurate way to determine the age of older Crayola products for consumers, you may wish to visit your local antique dealer. It is possible that they could provide this information. You may be interested in a published book titled "A Century of Crayola Collectibles - A Price Guide" by Bonnie B. Rushlow. This book covers history and products offered through the years. To obtain this book, please visit your local book store. As a further reference, the ISBN is 0-87588-638-8. It may be possible to locate the item you possess to get an estimated value.