[kkrell]

No personal experience, but maybe some leads among these. I think are all from the late 1980's:

Guitar at Elderly Instruments:
https://www.elderly.com/products/tom...12-string-1985

Authored an article in this magazine:
https://www.asiartisans.org/content/...r-issue-5.html

https://www.asiartisans.org/pdfmags/5.pdf

An article on him here:
http://parkbugle.org.s3.amazonaws.co...es/1986/12.pdf