Hong Kong, China
1992 International Stamp Exhibition “KUALA LUMPUR ’92” – Kuala Lumpur, Malaysia
1992 International Stamp Exhibition “KUALA LUMPUR ’92” – Kuala Lumpur, Malaysia
1992 International Stamp Exhibition “WORLD COLUMBIAN STAMP EXPO ’92” – Chicago, USA
1992 International Stamp Exhibition “WORLD COLUMBIAN STAMP EXPO ’92” – Chicago, USA