Not sure where you're getting the COE, it usually means Cab Over Engine which is a 5000 model not a 6100. 6100 is a 2 ton with a 137 inch wheel base. Take a look at the COEs in the Gallery.

Larry

Larry Hayes
Charlottesville, VA
48 3600 Flat Bed
49 6400 Grain Dump
48 Allis Chalmers G