multiple differences in the same tractor

I am almost finished cleaning up my 1954 farmall 100. I ordered a new "farmall" emblem for the side and it is wrong. I went to a local used tractor dealer. He has about 50 or so used farmalls go through his place a year. He currently has 2 model 100's I looked at them 1 has the same style emblem the other has a different style. I also looked at the cultivators 1 has different rear arms. There where also some other differences. Here is the facts about all 3 tractors. All came from the same dealership new, all have been local 1 owner tractors, all bought new within 18 months of each other the serial numbers are 1000 apart. So these tractors are still original. it almost seems like in assembly when they ran out of 1 style they just used another along with other parts

The "FARMALL" emblems could have been from different suppliers or even different batches from the same supplier. Or there may have been some deliberate change (cost?).

I assume you are refering to the tool bars on the cultivators. There are a lot of cultivator variations and the difference could represent differences in what was ordered.

yes the tool bars