Most likely Bessarabian, beautiful rugs that really enhance a room. I have a couple. Not likely 100 years old but still very old. Wash it and lay flat unless you have a wringer.
this is a slit tapestry weave, navajos uses a plain tapestry weave or shared warp weave navajo rugs use a continuous warp secured to the loom with yarn so you never have fringe on a real Navajo rug unless it's been cut