Would love to see a copy of your photo, and I will give you my straight opinion about it. Contact me via our website: http://ourworld.compuserve.com/homepages/danne/

There are only two three known photographs of Butch and Sundance in South America, two from Argentina and one from Bolivia. They are reproduced in DIGGING UP BUTCH AND SUNDANCE, Anne Meadows (Bison Books: 2003); SUNDANCE MY UNCLE, Donna Ernst (Creative Publishing, 1992), and TRUE WEST, November/December 2002.
Dan