This Showa was breed by a koi farm in Taiwin, she's from a Taiwin Showa bloodline called "General", and i think it's quality is even better than Danichi Showa.
But unfortunately the koi farm which breed this koi closed down long time ago.
I still remember in those day when i first saw this photo, that Momotaro Koi Farm is not even well know in those day.
This is a very good example that Japanese is not the only people who can produce koi with excellent quality.