I open this topic in the hope that you will set your stamps related to the Olympics Games. Some postmarks include a pendant. I believe it will be an interesting topic. Many philatelists collect these thematic postal stamps.
Croatian stamps - XXIII Winter Olympic Games PyeongChang South Korea 2018
Croatian stamps - XXII Winter Olympic Games Sochi Russia 2014
Croatian stamps - XXI Winter Olympic Games Vancouver Canada 2010
Serbian stamps - XXI Winter Olympic Games Vancouver Canada 2010
Croatian stamps - XX Winter Olympic Games Torino Italia 2006
Croatian stamps - Olympic Games London UK 2012
Croatian stamps - Olympic Games Beijing China 2008