2000 - Fiji
2000 - Giappone / Japan
2003 - Giappone / Japan
25-06-2016 - Kyrgyzstan
21-03-2017: Corea del Sud - South Korea
Francobolli semicircolari Semicircular stamps
"NOTICE: this list is no longer updated, as this type of stamp is no longer considered to be unusual."
1997 - Singapore 2000 - Fiji 2000 - Giappone / Japan 2003 - Giappone / Japan 25-06-2016 - Kyrgyzstan 21-03-2017: Corea del Sud - South Korea