[Farmall] serial numbers to model year

[cliff king]

Hey guys of great Cub knowledge on here...I have a friend that has two (2) Cub Lo-boys model 154 that has no knowledge of what year either one of them were built. The first one is 200011U008604. The second one all I can find of any kind of number is 011253. Can anyone provide a guide or approx year these beasties were manufactured?
Thanks in advance
 
Cliff

		
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