In 1999, Slovak Post launched the exceptional Christmas Mail project, which, over the years, has become an inseparable part of the Christmas period. Again in 2022 (for the twenty-fourth time) children can send letters or postcards to the Baby Jesus at the address “Ježiško 999 99”. Exactly ten years ago the management of Slovak Post decided to not only promote this unique project among children, but also among the general public through the issue of a postage stamp based on designs submitted by children. Since 2013, when the first postage stamp based on a child’s design was issued, tens...