120 GT SN All
For this range of tractors, the serial number plate will look something like this--

T0571       001,001M

T0571 is the type code (see below)
001,001M is the serial number
Identification Codes

Code               SN Range                       Year        Color        Engine           Hydraulics         
T0571           1,001-7,500                     1970        Green       12K                 H-1
T0572           1,001-7,500                     1970        White       12K                 H-1
T0571           7,501- Up                        1971        Green       12K                 H-1
T0572           7,501- Up                        1971        White       12K                 H-1
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