70 C. And 70 C. \"marshal Petain\" each with hand stamp overprint \"fortress Lorient\" on cover from \"fortress Lorient 12.03.1945\" to La Baule with on the back arrival cancel from 31.03.1945, the letter is still to the old tariff of 1, 50 Fr. Franked - there however from 1.03 a tariff of 2, 00 Fr. Counted war the document at the postage for destination about 1 Fr. Later calculated - 0, 50 Fr. False postage and 0, 50 Fr. Postage due, this war with red postage meter postmark receipted, issued only always 300 examples, expertized Calves and expertise Lothar Herbst VP (2023) : \"the condition of the stamps is perfect. The letter with all slight traces of use. Very rare ensemble whereby covers of the fortress Lorient general very rare are. \", Michel 2.600.-