This is a rare and highly collectible stamp from Indonesia's official airmail series, overprinted with the word "RESMI". The stamp was issued in 1949 and features an aviation theme, making it a must-have for any serious stamp collector. The stamp is of high quality and is in F/VF (Fine/Very Fine) grade, although it has no gum. This stamp is multi-colored and was manufactured in Indonesia, making it an ideal addition to any collection centered on Indonesia or Asian stamps. Although uncertified, this stamp is authentic and perfect for stamp enthusiasts and collectors alike.