This is an Estate sale find mounting bracket. It had a tag on it that said (1928 1929 Chevrolet 4 Door). I have no idea what its function is. Fair condition. The stem is hollow and it came with a bolt that has a hole though it. I assume its for lighting but again it was not marked for what it is. I googled some 28-29 chevys and it is difficult to see where this part goes.. See pics for details. Good restoration part. Item is sold as pictured. Thanks for looking.