PAPILLON DE METZ: small flimsy letter dated “Metz, 28 septembre”, addressed to “NOGENT LE ROTROU” with arrival cds., from there redirected to Nogent le Roi with final arrival cds. “NOGENT-EURE-ET-LOIRE 10 OCT. 70”, fine. A quite extraordinary balloon from the so-called Corps Franc, possibly unique as redirected with two different postmarks, certificate Brun (2025)