Literature. Garcia-Lomas, J. I., 'Resena – Inventario de Marcas, Sellos, Pruebas y enteros postales de Puerto Rico (Como Dependencia Postal Espanola)', Colección Filatélica Hobby num. 2, Madrid, 1977, hardbound, 255 pp. Well illustrated. Used.
A buyer’s premium of 25% plus a 20 SEK lot charge is added to the hammer price
