Anyone know the difference of a 1960 1900 wheatland and Industrial.  My 1900 has yellow paint under the green everywhere.  The documentation from the museum in Charles City Iowa Said it is the Third industrial built and one of the first seven tractors on a pre production run.  This is my first Oliver and Just trying to figure out how it ended up green.  By the way its my first post here and thanks for the Nice Forum.  Looks like a lot of interesting things discussed here.  Thanks again.