Covers: Argentina Image Description History Armada Argentina Forza de Submarinos Comandante, 9 March 1978, Mar del Plata   Armada Argentina Submarino A.R.A. San Juan (S-42, SSK German TR 1700 class), 21 May 1997   Armada Argentina Submarino A.R.A. Santa Cruz (S-41, SSK German TR 1700 class), 19 December 1996, Base Naval Puerto Belgrano   Armada Argentina Comando de la Forza de Submarinos , 7 February 1994, Correo Naval