No, that is not Satanta. 1) To the best of my knowledge, Satanta was never reported to have a shirt of shell armor. 2) I believe this is the Comanche known as Pohowiquasso [/puhihwitU kwasu/ 'iron shirt’], who signed the 1861 Confederate treaty at Fort Cobb. [and thus obviously not the "Pohebits Quasso" allegedly killed in 1858.]
California, yes I do think the same, the photo above doesn´t show Satanta, face is different than that of the photo below which is Satanta / Set-Tainte. But would be interesting to know who that man is shown above, wearing that hat. Not sure if he is Kiowa also, or perhaps some other tribe like Caddo or Wichita ?
Ah, I may be wrong with thinking that man wearing hat is Caddo or Wichita. Just noted the post of tk who thinks he´s Comanche, known as Pohowiquasso. TK always having evidence when doing statements,no doubt.