I knew about the Peter Ganine “Gothic”, Gothic No. 1457, Salon Edition (not the tournament edition) as used in TOS episodes “The Naked Time”, “Journey to Babel”, “Elaan of Troyius”, “The Paradise Syndrome" and “Day of the Dove" )
...and the “Classic” set, Classic No. 1494 also by Peter Ganine which was used in pretty much every other episode where a chess set is seen other than those mentioned above:
Has the original set as seen in “Where No Man Has Gone Before" ever been sourced?