I have one of those sets! I was a gift from a dear friend. I has a very nice case as well. I wouldn't risk it by attempting to see if it will go through the TSA these days. What would you do if they insisted you throw it away?

Retire it to a place of honor and use it for picnics.

The last time I saw a set like that for sale, it was expensive.

I am very sensitive on this issue and have even given up carrying on my favorite coffee mug (Nissan as well). Don't want to see it thrown away.