After liberation, postage was free for military personnel sending or receiving mail. The Post Office typically overlooked cases where this was not evident. However, occasionally, specimens are found where postage due is charged. Early examples with overprinted postage due stamps are rare.
Unfranked letter, sent to Belgrade (13.II.45) where it was censored by Military censor No. 5 and charged a postage due fee of 20 din for inland postage. The place of dispatch is not visible as the postmark is obscured by the stamps. Rere usage of postage due stamps with the 1944 overprint.