When I do this I always break it down by decade: 1940's - '49 Bowman 1950's - '57 Topps 1960's - '63 Fleer/'67 Topps 1970's - '72 Topps 1980's - '84 DonrussSome of the ugliest sets IMO are 1973 Topps/1977 Topps/1981 Fleer.