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)
1968
70
1987
436
1926
1
1969
82
1988
456
1934
2
1970
98
1989
468
1938
3
1971
115
1990
482
1947
4
1972
134
1991
496
1952
5
1973
154
1992
508
1954
6
1974
174
1993
519
1956
7
1975
195
1994
530
1957
8
1976
215
1995
539
1958
9
1977
236
1996
546
1959
10
1978
257
1997
552
1960
12
1979
280
1998
559
1961
15
1980
303
1999
581
1962
18
1981
326
2000
586
1963
23
1982
348
2001
592
1964
30
1983
368
2002
597
1965
37
1984
389
2003
602
1966
46
1985
404
2004
606
1967
57
1986
421
* 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.