Weighting question for 20th Century Circulated Type Sets

Is there a reason why the 1964 Kennedy has a weight of (2) in the Circ. Type Set and a weight of (1) in the Circ. Set with Variations?
Inquiring minds want to know.
If no one has an answer I'll email BJ tomorrow.
Inquiring minds want to know.

If no one has an answer I'll email BJ tomorrow.
Dan
0
Comments
I was curious to know if anyone else had noticed. It might have been overlooked, if it is incorrect.