These are the original "Blue Cards" Collector Number Packs) which were manufactured by Mattel from 1989 - 1994. Each car had its own number. The cards were all blue, for all blister packs released from 1989–1994. Numbers included went as high as 274; however, these were skip numbered, and numbers such as 48, 61, and 173 were not used. Some of these cars were purchased at retail and may have a price sticker on the face of the card. These items are at least 25 years old and can no longer be found in stores or from wholesalers.