Approx. 3:5 white flag with the communal coat of arms on it and horizontally centered thick black sans capitals reading "I. communalidad" above and "Punta Arenas" below. António Martins, 14 November 2004
"I." stands most probably for "Ilustrísima," "Most Illustrious." Santiago Dotor, 17 January 2001
The photo online shows two different light blue shades for the sky in the outdoor scenes shown, and the cartouche in the former is differently colored in the part protuding behind the crown. António Martins, 14 November 2004
This seems to be a gonfanon version of the flag. Differences between the flag and its gonfanon version are the lettering face (serif in the gonfanon) and the presence of a blue border and bottom fringe in the gonfanon. António Martins, 14 November 2004