the HOHNER HS90 was introduced in 1997 and discontinued around the year 2000. To determine the exact year of production we need the serial number.
The body of the HS90 is made of maple, alder and rosewood, the neck is made of maple and comes with a rosewood fingerboard.
This guitar has a 645 mm scale. For the electronics we used to standard single coils and a humbucker in bridge position.
In 1998 the official price for this guitar was 775 DM (which would be around 390 € today).
That are all the Information that we found.
I hope it helps!