Can anyone identify year of this fender

That fender in primer is a 1976 fender! You’ll need a 76 antenna bezel.

Up to the end of ‘75 the antenna mount on the fender was flush (merely a hole cut in the fender) but for '76 they cut the hole and had an indentation on the hood side of the antenna mount. You'll notice the fender is raised up on the hood side of the mounting in your picture.