The Yasuhara T981 or Isshiki (一式) was a Leica-thread mount camera from Yasuhara Co. Ltd..
About four thousand T981 were made.
The T981 was also sold under the name Phenix, made in China by a company with the same name. There was a limited edition called Phenix JG50, sold with a collapsible Phenix MC 50mm f:2.8 lens.
- Yasuhara's site in happier days (December 2003) as preserved at web.archive.org (mostly in Japanese)
- Yasuhara T981 chrome and black versions at Madam's Ichirizuka website
- The Yasuhara T981, with detailed repair pages at K. Fukushi's Rangefinder website