My Federal 215 primers in that same style box are lot number AL.75/24/5. That and AL-85/1/8 look suspiciously like dates. Wonder if the numbers 75 and 85 are reversed and represent 1957 and 1958 or if they really are 1975 and 1985. Regarding the previous Winchester lot number SP134 (over) E106830, it is not in a Winchester or Western lot number format I've seen before and I have Winchester primers going back to 1937, and Western back to 1940. But that 106830, too, looks suspiciously like a date, say 30 October 1968.