According to Larry Gays book [i:1p3a4hy4]A GUIDE TO HART-PARR, OLIVER AND WHITE FARM TRACTORS[/i:1p3a4hy4] the 770 was changed in 1964.<!-- s:) --><img src="{SMILIES_PATH}/icon_smile.gif" alt=":)" title="Smile" /><!-- s:) -->