I would take a good guess that your tractor was made in 1969. To find out 101% sure, ask your JOHN DEERe dealer.
That serial number would make that tractor a 1963. That year JD used serial #'s 38200 thru to 59312. Your # falls into that sequence.
According to tractordata.com your 4020 is a 1970 model year tractor.
What year is my tractor
on the frame in the front of the tractor
1951
Write down the serial number off the seial number plate usually on the back of the tractor and go to your john deere dealer who can easily tell you the year of your tractor.
your tractor should be a 1948.
A John Deere model M tractor serial number plate is riveted onto the engine block on the left side of the tractor.
1983 Model Year
According to Parts Catalog 2150 your 265 John Deere was made in 1988.
according to tractor data it is 42331 hope it helped
The age can be determined. Take the serial number into your local dealer and they can look it up for you.
It's on the frame but it's also on a sticker under the seat.
Which type of tractor are you talking about? John Deere used similar numbering systems for its various models of tractors. My best suggestion for you is to try your local John Deere dealer and by giving them a full description of your tractor they can easily tell you what year your tractor was made.
The first place I'd check is on the rear of the tractor, somewhere above the PTO riveted onto the case rear of the tractor.