Numéros de série - Yanagisawa
| Serial Number | Year Manufactured |
| up to 00102143 | to end of 1980 |
| 00102144-00106981 | to end of 1981 |
| 00106982-00111892 | to end of 1982 |
| 00111893-00117142 | to end of 1983 |
| 00117143-00122663 | to end of 1984 |
| 00122664-00128485 | to end of 1985 |
| 00128486-00134903 | to end of 1986 |
| 00134904-00141658 | to end of 1987 |
| 00141659-00148774 | to end of 1988 |
| 00148775-00156006 | to end of 1989 |
| 00156007-00162968 | to end of 1990 |
| 00162969-00170073 | to end of 1991 |
| 00170074-00177117 | to end of 1992 |
| 00177118-00184318 | to end of 1993 |
Numbers listed in the left hand column of the table denote the approximate number range and the relevant production years are in the righthand column.
During the 1970s a date code was put into the serial number. The third and fourth digits reveal the last two digits of the date; for example, 1272903 = 1972, 12781317 = 1978, and so on. Serials from 1980 to 1993 are shown below.