Jody,
I'm guessing that the tractor you saw was probably a 530 Comfort King. I'm not positive on the date but I thing around 64 case changed the body style on the 30 series to a comfort king. Mainly what the change was they removed the front fuel tank and put it in the back of the tractor between the fenders.
I couldn't find a picture of a 530 with the type of fenders I was thinking of. here is a picture of a 870
<img src=http://www.tractorshed.com/gallery/tphotos/a21767.jpg>
I will also try to post a picture of a 630 with orchard fenders. picture on the big side.
<img src =http://img.photobucket.com/albums/v294/caseman-d/100-0020c_IMG.jpg>
I think this is probably more of what you say
caseman-d