The flag of Mejillones, as shown behind the mayor on the official website is light blue with arms and yellow letters. Olivier Touzeau, 16 August 2006
image found by Valentin Poposki, 5 June 2024
Before the current symbols, another set of flag and coat of arms, as seen on Wikipedia, were in use different from the flag presented in FOTW. Valentin Poposki, 5 June 2024
Regarding the flag reported by Olivier Touzeau, 16 August 2006, I am quite sure his image reflects what was in use back then, and not just a poor rendering of the one Valentin contributed, even though it’s the same basic design. Sadly, the official website as archived as of August 2006 https://web.archive.org/web/20060701123600/http://www.mejillones.cl/ shows almost all images as broken links (because they used a “modern” way to create website links which quickly become obsolete while classic href and src links work perfectly to this day). António Martins, 8 June 2024