This caused me to go to my office the next day and get the pennies in order. Here is the 8th decade (1979-1988) and you will note that 1982 is the high year here though the gasket seems to be holding things in place with the balls to help. Decades 6 (1959-68) and 7 (1969-78) have this balance and we end with a final picture of the 8th decade to inspire the sculptor to machine decades 9 and 10.