Now that's cool in a slightly wrong sort of way! Never heard of this before & curious to know what the background is & who actually made it.
If it was mid-80s, chances are it's a Chushin Gakki build. Rokkomann is a trading company not a manufacturer, and at that time had their own Maya & El Maya brands, as well as selling Rokkomann-branded instruments. El Maya was the high-end brand and these came from Chushin, so it's not unlikely that this did too.
I want it, but not enough to actually buy it! Pretty sure it's a defret, too. Shame.
Edit: Available for less money & with more frets! That's better...
https://reverb.com/item/10545034-alembic-1986-aj-ii-hb
Still ain't buying it though.