10p sepia, green & bright purple and 20p sepia, green and bright purple 'Visit of MEPSI Members' AIR overprint issue, the pair fine mint. (SG 976/977)
10p sepia, green & bright purple and 20p sepia, green and bright purple 'Visit of MEPSI Members' AIR overprint issue, the pair fine mint. (SG 976/977)