Here are the Italian date codes:
X = 1954 XX7 = 1971 AT = 1988
XI = 1955 XX8 = 1972 AU = 1989
XII = 1956 XX9 = 1973 AZ = 1990
XIII = 1957 XXX = 1974 BA = 1991
XIV = 1958 AA = 1975 BB = 1992
XV = 1959 AB = 1976 BC = 1993
XVI = 1960 AC = 1977 BD = 1994
XVII = 1961 AD = 1978 BF = 1995
XVIII = 1962 AE = 1979 BH = 1996
XIX = 1963 AF = 1980 BI = 1997
XX = 1964 AH = 1981 BL = 1998
XXI = 1965 AI = 1982 BM = 1999
XXII = 1966 AL = 1983 BN = 2000
XXIII = 1967 AM = 1984 BP =2001
XXIV = 1968 AN = 1985 BS = 2002
XXV = 1969 AP = 1986
XXVI = 1970 AS = 1987
