Auction # 2407 WORLDWIDE + ARGENTINA: Special March auction

Cover sent from Santiago to Buenos Aires (Argentina) on 5/FE/1897, with blue oval mark of "Ejército de Operaciones - Estado Mayor - División Cuba", on back it shows transit marks of Colón (Panama, 23/FE), Rio de Janeiro (19/AP) and arrival to destination (27/AP). The sender tried to use the military free frank granted to the mail sent between Spanish soldiers and their families in Spain, but the cover received due marks (on front and back), various defects, but with very rare destination and very interesting piece!