There is no identifying info on the shirt, but I’m (Ruby L.C.) pretty sure I bought this from the Utah Area. There is no year on the shirt, but I am pretty sure this is from 1996.
The “12” signifies the 12 Years of C.A. and 12 Steps of C.A. and that was the theme of the 1996 World Convention in Georgia.
Private collection, Ruby L.C.