“RETURNED FROM ADDRESSEE´S UNIT / UNDELIVERABLE”, two-line handstamp on franked cover from England to Kroonstad with “FIELD POST OFFICE 20 JA 11 (19)01” and red manuscript “not with regt.”, also a similar handstamp in purple on a franked envelope from England to a prisoner of war trooper, reverse transit cds. “FIELD POST OFFICE DE 18 00”, some usual wear and minor toning, still fine and a scarce duo
