When was your Yamaha or Eterna piano made? To determine the approximate age of a Yamaha or Eterna piano made in Japan, simply check the serial number against the list below, disregarding the last four digits of your number. Year Serial No. (+ 0000*) Year Serial No. (+ 0000*) Year Serial No. (+ 0000*) 1900 (start of production) 1969 82 1989 468 1926 1 1970 98 1990 482 1934 2 1971 115 1991 496 1938 3 1972 134 1992 508 1947 4 1973 154 1993 519 1952 5 1974 174 1994 530 1954 6 1975 195 1995 539 1956 7 1976 215 1996 546 1957 8 1977 236 1997 552 1958 9 1978 257 1998 559 1959 10 1979 280 1999 581 1960 12 1980 303 2000 586 1961 15 1981 326 2001 592 1962 18 1982 348 2002 597 1963 23 1983 368 2003 602 1964 30 1984 389 2004 606 1965 37 1985 404 2005 610 1966 46 1986 421 2006 615 1967 57 1987 436 1968 70 1988 456 * Listed numbers represent increments of 10,000 units, beginning at the first of that year—numbers start at 10,000 in 1926, for example, and 100,000 in 1959. Actual serial numbers therefore contain four additional digits. © 2006, Yamaha Corporation, Japan