Serial number range: 1940501-3869616 (1962-1999, approx. 185,783 produced). Production by year: 1962: #1940501-1941000 (500 units); 1963: #1999001-2004000 (3,997 units); 1964: #2033001-2039700 (2,000 units); 1965: #2078501-2147450 (9,000 units); 1966: #2157001-2206100 (12,000 units); ... ; 1994: #3655826-3668030 (1,005 units); 1996: #3735701-3765799 (2,000 units); 1997: #3784330-3785329 (1,000 units); 1998: #3818625-3841499 (2,000 units); 1999: #3868617-3869616 (1,000 units)