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I have never hear of a GTS badge, maybe you can be the first. Youcan check with Autobadges and see. GTA's real meaning is Grand Tour Automatic. Ifyou had a GTwith astandard back in the original productions years it was just labled GT. The GTA was only made in production year 1967. The GT was made 1966 on but one year of the GTA that is why I am holding on to mine.