Although I have already published some of these received stamps, this series came immediately to my mind when I read today's topic for Sunday Stamps: Issued in the 1900s.
The stamps were issued in 1998 under the title Celebrate the Century. Ten sheets of fifteen different stamps were issues, which each sheet depicting events of one decade of the 20th century, from the 1900s to 1990s. You find here the complete list of stamps.
I have got just a sample of these: