Mulu, Clearwater Cave
From the “longest cave system in Southeast Asia,” at Mulu, in Sarawak, north Borneo, an unused card (Grade: 1, $5). Also one more that was mailed in 1987 with two stamps (Grade: 1, $6).
From the “longest cave system in Southeast Asia,” at Mulu, in Sarawak, north Borneo, an unused card (Grade: 1, $5). Also one more that was mailed in 1987 with two stamps (Grade: 1, $6).