2018, New York
2018, Vienna
2018, Geneva
2018, Full Sheet, New York
2021, Definitive, New York, Single
2020, Definitive, Single, Vienna
Definitive, Geneva, New York, Vienna
2020, Definitive, Full Sheet, Vienna
2009, Definitive, Full Sheet, New York, Single
2022, Definitive, Full Sheet, Vienna
2023, Definitive, First Day Covers, Geneva