Burelage Changes: the same postage stamps issued chronologic with different burelages
Burelage Introduction: the same postage stamps issued chronologic without and than with burelage
Burelage Omission: the same postage stamps issued chronologic with and than without burelage
Edition 1851: coloured paper without burelageEdition 1856: white paper with burelage
Edition 06.1922: with burelageEdition 10.1922: without burelage