There are many such examples throughout the John Deere line, but especially so with some tractors built after 1960. Without full information from the owner, it will show on the Official Document as a row-crop tractor. 13748 1946.15780 1947.18853 1948.25235 1949. For example, all 4620s are shown in the Serial Number Register as row-crop tractors, even though some were built as Standards. The basic 60, the standard 60S, the high-seat standard 60S6 (in 19 only), the orchard model 60-O, and the high-crop 60H with 32-inch clearance.