Lot 20741 – 1924 Mission Interalliée de Contrôle des Mines et Usines/Centre de No. …/24.Sept.1924/L’Ingénieur en Chef/des/MINES”

1924 (Sept 24) Postcard from Duisburg to Alessandria, sent by a member of the Italian Delegation to control mines and industries, with “Mission Interalliée de Contrôle des Mines et Usines/Centre de No. …/24.Sept.1924/L’Ingénieur en Chef/des/MINES” cachet, then posted at the Belgian military P.O. with Rhein overprinted 5c and 20c (2), tied bilingual military cds’s n° 9. Extremely rare, further enhanced by the non-philatelic usage of these stamps.