Some are real nice and some are dirty. The tracks are both complete with no issues. The battery compartment has no issues.
The motor probably needs cleaned but it seems to work fine. Sometimes it is a bit sluggish the way old battery toys get.
Overall, a very fine example of this toy! The item "Vintage 1950's Saunder's Marvelous Mike battery operated bulldozer tractor works" is in sale since Thursday, July 20, 2017. This item is in the category "Toys & Hobbies\Electronic, Battery & Wind-Up\Battery Operated\Pre-1970".
The seller is "udabasketball" and is located in Lykens, Pennsylvania. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Russian federation, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica.