Star shaped
"NOTICE: this list is no longer updated, as this type of stamp is no longer considered to be unusual."
1970 - Tonga (adesivi / self-adhesive)
1975 - Tonga (adesivi / self-adhesive)
1976 - Tonga (adesivi / self-adhesive)
1978 - Tonga (adesivi / self-adhesive)
2004 - Vanuatu
2008 - Israele / Israel
22-01-2016 - Giappone / Japan
21-03-2017: Corea del Sud - South Korea
21-07-2017 - Giappone / Japan
08-11-2017: Spagna / Spain (self-adhesive die-cut)
"NOTICE: this list is no longer updated, as this type of stamp is no longer considered to be unusual."