ChinaBelgium 1915 Military mail Env to Switzerland
envelope written from the 1V Army and bearing Belgian Postage Dues SGD103, 50c grey (Block of 4) tied by "K.D. Feld-Postexped Ob. Komm. 1V. Arrmee 23/5" datestamp, underpaid with TAX handstamp and Swiss Postage Due Yvert 40, 50c olive & carmine tied on arrival by "Feldpost Poste de Campagne No.9" double-ring. Scarce item of mail. (pt)
