Les , From my own group of trucks and personally , every truck Ive seen, 1960-1963 is Silver Cad with silver cad bolts and 1964-1966 is gray/Black phosphate with silver cad bolts .
1963 Silver Cad hinge gray phosphate spring
1964 Lambrecht truck . You can see the contrast in this picture of the 1964 between the cad plated bolts and gray phosphate hinge.
