Massey 431 and 451

[Bpflora]

Just bought a used 431 Massey. Looking at tractordata, and confused as to why they made a 431 and 451, both 52 Hp engine, in the same years -2004 and 2005. How do these tractors differ? Thanks

 

[Harry in Ky]

It looks like the 431 is built in Turkey, while the 451 is made in Brazil. New Holland also builds a few models in Turkey, and most are billed as "economy" models, meaning they sell for a slightly lower price than some of their other models with similar horsepower ratings. They also tend to be simpler in design(fewer bells and whistles, less creature comforts), and maybe a bit lighter in construction.
For instance, the 431 is listed with dry drum brakes, the 451 has wet disc. I'm sure there are a few other differences here and there, and most likely price is one of them.