Registered cover from Madrid to Reformatorio de Adultos prison in Alicante, with postmark dated on April 1, 1938, plus special mark for registered mail serial number "Estafeta Sucursal / Nº 1 / Madrid / Certificado Nº". Addressed to the prisoner Luis Conde Devesa.
Cover from Corps (Isere), France, to General Franco in Madrid. Postmark dated on April 4, 1941. Arrival backstamps both dated on April 26, 1941, one from Madrid and the other one reading "Jefatura del Estado / Servicios Postales". Rare.