China. (Indo-Chinese Post Office in Canton - Macau). 1904. Registered envelope addressed to Macau bearing Canton SG 24, 25c blue and SG 26, 30c cinnamon tied by Canton - Chine double ring '27th Avril 04' with boxed hand-struck 'R', endorsed 'Per Steamer "Kiang Tung" with Macau arrival on reverse '27th Avr.'
Scarce item of incoming mail to Macau.