1913/23: Junk 1c & 3c (x2 one on reverse) cancelled by „CANTON SUB OFFICE 8 1923“ cds on picture postcard of the ESPERANTO CONGRESS IN NÜRNBERG, GERMANY „XV UNIVERSALA KONGRESO DE ESPERANTO NÜRNBERG“ and showing a green ESPERANTO LABEL „ESPERANTO PROPAGANDA FOND 25 PFG GL EA“. Cachet „BATAVO NO 2370. / X 13 10 14 15 18 / BERNARD FELIX MAURICE / MI DONAS PM DE SIAM HINUJO HONGKONG JAP. MALAY & MALACCA“ sent to Rodewisch, Germany. Very fine and rare, ONLY VERY FEW ESPERANTO ITEMS ARE KNOWN FROM CHINA.