'86 is definitely at least 1-2 years after the Elka 83, which is around '84. No doubt it is the later unit.What Iorio called the Syntara 2 (I have one of these) used the Elka electronics called fisa midi 2. The schematics for which have a draft date of 1986. I also have a nearly identical instrument that was sold as a “monarch”. With the same electronics. I’ve seen quite a few of these with different brand names including Piermaria.