Heavyweights S'Cool Bus in deep yellow enamel.  I had three of these back in the early 70s, and you would think that one of them would have survived until today!  Unfortunately, that wasn't the case.  I acquired this example from one of the mail order houses in early 1995 for a good price.  The paint has only a couple of blemishes, and the most visible defect is a little nick in one of the hood decals.  The wheels are perfect, and it displays extremely well.