1922 USC vs. University of Arizona Guards football ribbon

This is an Guards field ribbon from 1922, for football.   It says "Football, USC vs. University of Arizona, October 14th, 1922 Bovard field, Guard"  This ribbon is from before the Coliseum was built, and USC played their home games at Bovard Field.   USC won this game 25-0.   It is in excellent condition, and an extraordinary piece of USC football history.