That tractor is probably 30 years old, it is most likely from the late 1970's it is odd to see that it is in Michigan. That is pretty much a west coast brand, I'm not sure if they still import them but seems to me the represtative was based out of California and the tractors were used in vinyards and orchards. They also made walking tractors. The model number is interesting because I thought that series came from the 1980's but the paint colors are definately from the 1970's. The front grill work also looks like the earlier models.