Don,
The 200 came standard with 23 x 10.50 - 12 rear tires, and the fronts were 16 x 6.50 -8. As you stated, you could get the 4.00/4.80-8 for the fronts as an option. The narrow front wheels would have been the type that used the 1" spindle and would have had the internal bearings with a grease zerk.