For some strange reasons NO Polish catalogue has ever mentioned the offset-litho printed stamps!

The one in the middle had been printed in Kraków in photogravure with an imprint at the bottom!

Moderador: Rein
That is the problem NO experts catalogues or handbooks since the 1960-ies do mention anything about offset-litho being used! Including the ones that have transcribed the information straight from the Archives [then still communist's!]daa1406 escribió:Hi Mr. Rein, welcome to back.
Regarding the stamps you speak only of the Michelcatalog?
Fischer and expertise catalogs include that information.
Daniel
Expertise Catalogs = (Polskie Znaki Pocztowe - 1962 and Katalog Specjalizowany Znakow Pocztowych - 1990)
leonardoleidi escribió:I am happy seeing your messages again!! Welcome back!!