Front: PLANTA CARBONERA DE BALBOA CON EL DIQUE EN EL FONDO, CANAL DE PANAMA. BALBOA COALING PLANT WITH DRY DOCKS IN BACKGROUND, PANAMA CANAL. Back: 1. L. MADURO, JR., 34-46 CATHEDRAL SQUARE, PANAMA R-79163 MES FOR MESSAGE ONLY. M.JS ADDRE TWO CENTS
