cover INTERNMENT MAIL: 1915 (6 May) envelope (flap missing) addressed to Eton College, London, showing unframed "PORTVRIJ/FRANC DE PORT/Militaires étranges/internés dans le Pays-Bas" h.s. in violet, "BODEGRAVEN" c.d.s. (6.5) and London "PAID" machine d.s. in red. Scarce