2018, New York
2018, Vienna
2018, Geneva
2018, Full Sheet, New York
2023, Definitive, First Day Covers, Geneva
2019, Definitive, New York
2009, Definitive, Full Sheet, New York, Single
2011, Definitive, Full Sheet, Geneva, New York, Single, Vienna
2020, Definitive, Single, Vienna
2020, Definitive, Full Sheet, Vienna
2010, Definitive, Full Sheet, Single
Definitive, Geneva, New York, Vienna
2022, Vienna, Definitive, Single