I want to say the dead giveaway is the doubling on the mint mark dispositive of strike doubling, but let's hear your opinions. Thanks!
Machine Doubling. 68, 69, 70. You will find alot these years for quality control was some where else.
You are correct.... my bad.... don't want to be misleading..... therefore, you can say that you are selling an "Extremely rare" 1968S Doubled Die!