French style 4-pocket shirts like the one on this page were intended for upper class South Vietnamese civilians (source: https://www.facebook.com/groups/1726441960963865/posts/3214510792156967/). However, some were made and worn by western news media correspondents (sources: https://www.voanews.com/a/former-correspondents-recall-end-of-vietnam-war/2742485.html, https://www.facebook.com/groups/1726441960963865/posts/3214510792156967/) as well as covert operatives (source: https://www.flickr.com/photos/142188539@N06/48787777783/in/photostream/).
Material is a thin cotton.
Has patch ghosts of tapes sewn above pockets.
External “accordion” style (source: https://www.thecreativecurator.com/types-of-pockets/).
Used for holding pens and other writing utensils.
Pink plastic buttons.
Tu Do Street is a long street in Saigon, South Vietnam. “Tu Do” is Vietnamese for “Liberty”. After 1975, the communist government renamed it “Dông Khoï” (source http://saigon-vietnam.fr/tu-do-street.php).
USAF CCT Advisor (Thai Unity Program):