the top looks like sycamore & there looks to be hints of flame feature in the wall of the pickup route, thus it would seem the top is solid.
This, just going off what I have seen in the photos.
Since the example looks to have a 1984 serial # then it's not far fetched to think the top may actually be sycamore.
Tokai was supposedly going through some very tough financial issues in that time frame, and sycamore was quite a bit cheaper than hard maple.
Food for thought.