Mystery shirt, but I love the pattern!

I just wanted to share this. I bought this shirt sometime in the early 80s. The store sold buyers samples. The shirt does not have any labels except for a made in Dominican Republic. It is 100% cotton. The pattern is printed batik, (I think?) the pattern repeats, but there is variations in each repeat. The beige background varies intensity as well. The shirt was sold like this. I have worn it every summer. Enjoy!