Detachment of San Miguel de los Reyes, 1938

Post card franked with 5c Edifil 745 and pair 10c Edifil 746 without postmark, but text dated on Oct 15, 1938, sent to Mariano Ballester Navarro in San Miguel de los Reyes prison in Valencia by his brother Francisco, in 6º Batallón, 2^a Compañía of the same prison (a detachment in another city). Mark «2» on the back, possibly belonging to the censor. Central crease.