Except for the bumper and grill, the trim looks good so it must be stainless steel. Some tender loving car and a good polish job and it would look like new. Very similar to what Widman dod to the Aluminum trim on his Corvair.
There's writing on the passenger windscreen. Either "for sale" or "not for sale". You have to put "not for sale" on these if you plan on fixing them up someday because your doorbell otherwise won't stop ringing.
That car has just the right amount of patina. If it fell into my lap I'd get it running and some new tires and cruise the way it is.