The chess sets we are interested in here, are those used in the championships whose list appears in the wikipedia's list of the link shown below:
CHESS SETS USED IN BOTH UNOFFICIAL AND OFFICIAL WORLD CHAMPIONSHIPS

The chess set used in New York City 1894 (Special thanks for the finder of this picture, our friend Fer8799):
Hi folks,
I've decided to start this forum aiming to gather the maximum of graphic material related to the chess sets used in all of the world chess championships to date. In order to add some historical and scientific value to our topic, please write clearly the city and the year of the event displaying the chess set.