Japanese occupation, Canton overprint. Registered airmail at 15 times base rate, with stamps in Japanese military notes and air mail
Japanese occupation, Canton overprint. Registered airmail at 15 times base rate, with stamps in Japanese military notes and air mail surcharge in Japanese yen. 日本占領廣東“粵省貼用”航空挂號實寄上海，超重15倍，貼粵省郵票5.32元，加15 x 20錢日幣航空費，航空由日本航空公司執飛，只收日幣。
