I am one of the few who have been able to find a KC Thief (2 whole, 1 half bottle). The two whole ones are ice blue and aqua green. I traded the aqua green one to a friend who had a couple of amber Kansas City amber Coca Cola straight sides (circa 1902-1909) and I kept the ice blue one. I sold the 1/2 Thief to Ray D. in Texas, who intended (as he told me...) to play a trick on a friend.
Anyway, I have never hear of an Amarillo Thief bottle, let alone a Monterey (Mexico?) variant. When you say "script"what do you mean? When you say "1906" what do you mean? My understanding was that the KC Theif I have, was produced in 1905-06 so, that reference has significance to me.
Thanks!
Tom