The shell top It looks like my sulcatas. I'm not sure if the bottom. I don't really know much. I just try to help as much as I can.
Have a nice day :0))
My loves:
Husband
2 dogs Blue and Baxter
3 sulcatas Donatello, Penny, and Charlie.
Chilensis plastron(chaco) Young specimen with typical black chevrons.
Another Chilensis plastron(Chaco) sometimes they do not have the black chevrons which can be confusing with sulcata look alike. But this specimen is very very old. 60+ years.
And then a comparison of Sulcata on the left and Chaco on the right.