Puning Temple in Chengde and Würzburg Palace 1998 Architecture - Palace Architecture - Religious China Commemorative First Day Cover Joint Issue Rectangle UNESCO Heritage +
150th Anniversary of Istana 2019 Anniversary - Sesquicentennial Architecture - Palace Commemorative First Day Cover Rectangle Singapore +
50th Anniversary of Singapore-India Diplomatic Relations 2015 Anniversary - Golden Jubilee Architecture - Palace Commemorative Diplomacy First Day Cover Joint Issue Rectangle Singapore +