Because of all these issues, the USPS gave up on self-adhesives for 15 years. Then in 1989, they decided to try again. This time they used an acrylic-based adhesive and produced 18-stamp convertible booklets and strips of 18 for affixing machines. The stamps went on sale on November 19, 1989, in Virginia Beach, Virginia, to coincide with the annual VAPEX stamp show. However, the stamps themselves were only distributed to 15 cities for a 30-day test period.