Japanese YHP 67 and 97?

[rprosperi]

(01-04-2023 07:01 PM)pavel nemec cz Wrote:  Although it does not answer the question above there is an very interesting document related to YHP 65 (look at the lower part of the page for the link to PDF document)...

Thanks for sharing the link, however note to readers: The document is in Japanese, so hard to read for most of us, and the poor quality scan likely makes it a poor candidate for OCR.