Here is the catalog of Ishiwata in 1974.
Back in those days, Cr-Mo tube of Ishiwata was one of two major domestic frame tube along with Tange Champion series. It was used in a number of foreign countries, was known as an excellent tube.

Ishiwata already closed business. However, its technology was inherited by Kaisei.

The catalog was offered by Mr. F. K.

This is the front cover. The marks which look like family crest were characteristic.

This is the back cover. The catalog explained about the purpose of tube set, the weight, the competition record, the caution, and the export destination in this page.

Here is the specification of tube sets.
There must be a number of cyclists who feel nostalgia from stickers.
015 Alpha was used for the Cherubim V-Ultra and the Cyclone lightweight bicycle as a super lightweight tube.
017 Record-breaker, 019 Glories-victory, 022 Speed-gallant were inherited by Kaisei as the brand names.