There are only 37 confirmed T206's with the AB 350 NF back vs. 75 confirmed T206's with the AB 460 back. In my opinion the AB 350 NF cards are easier to find than
the AB 460. And, within these two groups certain subjects are more available than others. For example, Duffy and Ford appear to have been Double-Printed with the
AB 460 backs.
However, don't misconstrue.....they are both tougher to find than a good number of the other T206 backs.
Furthermore, the 29 subjects from the 350/460 series with the AB 460 backs will also be found with the UZIT backs.
TED Z