I am pretty sure I now own the 1981 LS100S at the beginning of this thread on page 1, sold on eBay in 2018.
http://www.tokaiforum.com/viewtopic.php?f=11&t=25613&p=192267#p192267
http://www.tokaiforum.com/viewtopic.php?f=11&t=25613&p=192267#p192267