Germany. (France). 1872. Envelope addressed to France bearing Germany Yvert 15, 1/2g orange and Yvert 16, 1g carmine (2) tied by Flensburg date stamp '13th Dec 72' with 'Allemagne/Erq. Paris' French entry cachet in blue and framed 'Affranch : insuff' (Van der Linden 14) on face and rated '3' in m/s with Libourn arrival. Lovely underpaid Eagle cover to France.