The year is not shown in the stamp. You must have misread the 7.
(MM/DD) used thru '70.
The year is shown in the center section casting date. Small raised
code on one of the axle support gussets. Look facing the cover opening at the 5 or 7 O'clock position.
Letter for month and numbers for day and last digit of year. Looks similar to this:
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(MM/DD) used thru '70.
The year is shown in the center section casting date. Small raised
code on one of the axle support gussets. Look facing the cover opening at the 5 or 7 O'clock position.
Letter for month and numbers for day and last digit of year. Looks similar to this:
