After searching I was starting to think this may be a F455D. I was wondering if the engine tag might have said 39.5 KW.. not HP which would be about 53.7 HP and maybe just right for the F455?
Google Image Result for http://www.compact-tractors.com/images/455d.jpg
Then I ran across this and if the tractor is 39.5HP, it would more likely be one of these.
Yanmar F395 Compact Tractor and notice that it says that these F395 and 415 models are actually Kukje tractors. I know some of the Kukje models used Yanmar engines and I think are nice tractors but good luck finding many parts. If it has a direct Branson or Century crossover you may be in better luck but who knows? I think Ernie is probably spot on ( he always is) about it being one of Handlers....that color is pretty unique but there are several other sellers in the U.S. who sell that same color refurbished Yanmar.... maybe they get them from Handlers??? I'll point out that the op's tractor also comes with the same Buhler/Allied loader that the Texas and N. Dakota dealer's F455,415 and 395 have.
I also searched the Yanmar the op posted and at $8500, I think the tractor is probably priced VERY reasonably...if it checks out. But then depending upon what it actually is, if you ever need hard parts................? I'm curious if the tractor actually says "Super Forte" on it, which means it's a Yanmar model and not a Kukje and if it does, then what model is it because if Ernie says he doesn't think it's a FX335, that's good enough for me.
On edit.. well, on the links to the tractors I posted I noticed that there was a hodgepodge of links and assumed the site "compact tractors. com" must be a means for a number of dealers to list their grey market tractor. I noticed the 395/415 dealer had a Texas phone number and the F455 pic gallery had a N. dakota number but the website states that all of their tractors are refurbished, repainted green and done so at a "Reconditioning Facility" in Abbotsford, BC....... Handlers Equipment's home town! 'Ol Ernie, You just can't get ahead of that guy!!!!