Featured Sterling Mexico 3 row hoops with extra stamp...what does this mean?

Very solid earrings, purchased from someone who had $$. Thinking that these were something they picked up in travels.

Obviously sterling, signed, "925, Mexico, TN 82" but as I was photographing to get ready to list, noticed a 2nd stamped mark on the gold part. Any ideas what this would mean? Thanks.







Here is the mark on the gold part. Will show in both orientations.

 

I think it’s Laton- Mexican jewelry maker.. their jewelry is usually sterling with brass.

 

That is what it appears to be.

Debora

 

Well done, Xristina! Helpful.

Thanks to you both for taking a look.

I kept seeing "Gato" and then couldn't get it out of my brain.

 

Post 1980, sterling and brass (latón) as @Xristina said.

 

Cats (gatos) tend to do that.