Trying To Figure Out What Year My Jeep Is

I just started to tear down and start rebuilding my grandpas old cj5. It’s been sitting in the shop for years and I figured it would be the perfect project to start and a cool memory to remind me of him when it’s finally back up and running. I’ve searched the serial number on the jeep and cannot find it matched anywhere. I’m trying to figure out the year of the jeep. I’ll post a few pictures of the jeep and the serial number tags. If anyone can help me out it would be much appreciated!