Oberschlesien (Upper Silesia) Stamps
Issued: 20th Mar 1921. Re-issue of the 1920 'dove of peace' set with 'Plebiscite 20 mars 1921' overprint on black or red.
"Dove of Peace with 'Plebiscite' Overprint"
Quantity Issued: Unknown
Valid Until: 20th Mar 1921