- 1992 (Brown wood design, pointed roof)
- 2002 (Red wood and door design, round roof, new decals, included product Handbook)
- The original model has Roy Wilson's initials near the base of the windmill.
- The windmill was not featured in the 2001 yearbook despite still being available that year.
- The 2002 Prototype had an unpainted roof, whereas the production model had a painted one.