At the below link you can download a PDF file that contain a list of

11193 firearms

The "Banco Nazionale di Prova" (National Proof House) stamps all Italian
manufactured firearms after proofing. The year stamp noted designates the year
of proof. In the case of new firearms the proof year corresponds to the year of manufacture.
Italian manufactured firearms only. The markings are most commonly found on
the receiver/frame and on the barrel.

From the year 1920 TO 1954 the date is written in "clear" (for example : 1920).

Proof Mark
Punzoni di Fabbricazione

FROM 1920	X = 1954	XX7 = 1971	AT = 1988	BZ = 2005
......	XI = 1955	XX8 = 1972	AU = 1989	= 2006
1939 =1939	XII = 1956	XX9 = 1973	AZ = 1990	= 2007
1940	XIII = 1957	XXX = 1974	BA = 1991
1941	XIV = 1958	AA = 1975	BB = 1992
1942	XV = 1959	AB = 1976	BC = 1993
1943	XVI = 1960	AC = 1977	BD = 1994
1944	XVII = 1961	AD = 1978	BF = 1995
1945	XVIII = 1962	AE = 1979	BH = 1996
1946	XIX = 1963	AF = 1980	BI = 1997
1947	XX = 1964	AH = 1981	BL = 1998
1948	XXI = 1965	AI = 1982	BM = 1999
1949	XXII = 1966	AL = 1983	BN = 2000
1950	XXIII = 1967	AM = 1984	BP = 2001
1951	XXIV = 1968	AN = 1985	BS = 2002
1952 = 1952	XXV = 1969	AP = 1986	BT = 2003
1953 =1953	XXVI = 1970	AS = 1987	BU = 2004

BerettaWeb - ex Catalogo Nazionale Armi Comuni

11193 firearms