Falkland Islands 1938 50 blue and chestnut, SG161Falkland Islands 1938 50 blue and chestnut, "Southern Sea Lion", 1937 first printing, SG161. A superb quality block of 4 from the first printing of the famous stamp. Very fine being unmounted mint with full original gum. A very scarce and desirable block in this condition. The Stanley Gibbons catalogue value for a single mint stamp is 160, giving a minimum catalogue value of 640, excluding the premium value for being a much rarer block of four and of