Two 1983 Topps Baseball unopened Michigan Test boxes, authenticated by BBCE. The Michigan Test wrappers were used for market testing in specific areas, including Michigan, hence the name. These wrappers were made of plastic, unlike the regular wax production wrappers, but they contain the same 1983 Topps baseball cards, including the possibility of Ryne Sandberg, Tony Gwynn, and Wade Boggs rookie cards. These boxes are highly sought after by collectors due to their limited availability and historical significance in the hobby.