Old Mexican Aztek Chiefs Blanket / Rug?

Hi There I am new here,
bought this rug/blanket a few years ago at a flea market from an old Mexican Man after watching a documentary of a chiefs blanket that got sold at auction for a lot of money......put it on a shelf and forgot about it...
now cleaning up my garage noticed it looks very old and handmade, it has a joint in the middle, looks like the wowing board was not wide enough........ and also the wool tread looks hand spun as it varies in thickness