Anne Adams from 1957!
Generally speaking, patterns are sequential, although over time it seems as though the numbers became a little irregular as, for example, Anne Adams 4672 from 1955 was sold longer than expected and thus was skipped in the 1957 rotation and didn't get reused until 1959. The "missing" numbers aren't usually missing--they are usually designs that were introduced the year before. In this instance, you'll probably find them in 1956.
