剣Chronology

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8109001000110012301540160017701800 820–899910–9991010–10991160–12291290–15391690–1769

2

3

1

3

1

2

1

2

1

1

2

5

3

5

11 +5

2

2

1

3

3

No year recorded 74

+68

Each crop stands at the decade of the first year its book's date gives; a date given only as before a year stands at that year. Dates come from the catalogues and editions cited with each record. The bars draw the whole span and their counts to scale; in the strip below them, fifty years or more with no crop are folded and marked. Japanese dates converted with HuTime ↗