Jadwiga and Jagiełło without swords
Fischer 334 | Michel 355 | Year of issue 1939 | Pre-war Poland
This is Fisher 312 with a slightly different look. Nazi Germany forced Poland to remove the swords and helmet at the feet of the king Władysław II Jagiełło and queen Jadwiga from this stamp because they claimed the design to the Universal Postal Union.
Jadwiga and Władysław II Jagiełło
Compare both stamps (Fischer 313 and 334) on one page.
Władysław II Jagiełło
Universal Postal Union