Searching the web I came across this...
http://audio-database.com/JBL/speaker/s101-e.html
Looks like the 1960's Lancer 101 (or is it the C56 Dorian?), but sold in the 1980s with very different components. I'm interested to see the crossover schematic, and searching the JBL site nothing shows up. Are these Japan-only products designed and built over there, with no real connection with JBL USA?