cover Romania, 1917, four Postal Tax stamps with Gultig 9. Armee overprints on cover from Bucharest, stamps tied by neat strikes of 12 Dec 1917 Bukarest c.d.s., violet 'Gepruft 12 Dez 1917 Postuberwachungastelle' and boxed '10' h.s., light file fold clear of stamps, otherwise fineest.