The artstar sets were released in 1983 after Neil Peart made them popular by using his "Artstar Prototype" from 1982- 1985 on the Signals, Grace Under Pressure and Power Windows albums and tours.
The Artstars were made from birch wood sandwiched between two plys of South American Cordia wood. They had 9mm bass drum shell and 6mm snare, floor tom and tom tom shells.
Here is a link to the 1883 Artstar catalog: TAMA Catalogs
In 1986 Tama
changed the shell thickness to 7mm and 9 mm and made them from Canadian Maple and renamed the kit the Artstar II.
The Artstar was very popular with rock drummers of the period because they were deep and loud. Stewart Copeland (Police), Gil Moore (Triumph), John Panozzo (Styx) and Brian Downey (Thin Lizzy) and many more all used Artstars at some point.
Hope this helped you. In my mind for $100 you made a very very good buy!