Year of Asagi first produced in 1875 Doitsu Asagi and Shusui were produced in 1910.
1830 to 1850 produced the first Kohaku
Dick your keep the right type koi because as far back as the book say's, these koi exchanged hand for very large sums of money. Makes me wonder in 1875 how much it cost for a good Asagi. It does not tell me that in my book. Its funny as the Asagie led to a temperary ban on the industery. They were eating these koi like we do catfish now,, back then the no scale type did not have a chance

Of course these were from the Germanic/Austrian origins.
Judy
ps. love this book