it looks like two separate issues have been conflated here; the original catalogue number was AB 4230, the AB prefix representing a list price of $7.98. The AL 9500 series seems to have started off as Arista's soundtrack series, which had a list price of $8.98, but during 1979 seems to have become Arista's premium series for non-soundtrack releases, at $8.98 list. I haven't found an exact date for AL-9512, but releases either side suggest it would have been in 1980. Anyway, different catalogue number not shown on the original issue means that there should be a separate entry.