1920 seems to be the most difficult year to find one with a coupon. It is the only year (minus a sepia variation or two) that I still need to complete my run. Very, very few come to market. Any year between 1913 and 1922 are very difficult to find with coupon however 1915 (especially) and 1916 are not too difficult. Great analysis by Rhett. I only know of a few people going for every player from every set. They are crazy.
