![COLOMBIA - 1934 - MULTIPLE: 20c on 1p bistre & deep blue '400th Anniversary of Cartagena' overprint issue, a superb unmounted mint block of fifteen comprising three complete columns from the sheet with sheet margins on three sides. (SG 456) (COL/33113)](http://latinamericanphilatelics.com/cdn/shop/products/COL33113_{width}x.jpg?v=1612974638)
20c on 1p bistre & deep blue '400th Anniversary of Cartagena' overprint issue, a superb unmounted mint block of fifteen comprising three complete columns from the sheet with sheet margins on three sides. (SG 456)
20c on 1p bistre & deep blue '400th Anniversary of Cartagena' overprint issue, a superb unmounted mint block of fifteen comprising three complete columns from the sheet with sheet margins on three sides. (SG 456)