Hey Scot,
I haven't looked at this in a while but when overlaying the PCs on a grid with T206 dimensions I am seeing consistency in horizontal & vertical spacing. The hight of the PCs are 3:4 ratio of a T206 and align perfectly with several of the Lash Bitters T206 overprints.
Width wise, its a 4:19 ratio, without any margin on the T206 side which we know there was. 17x8 could be an option.
These T206s look to have 2 different PCs overprinted, both with the front right side up and upside down as well as the reverse.
There is a lot going on to show in one animation, the cards that flash show where the overprint Lash ink aligns with the background PC. Look at the yellow gold kicker rod on the bar, Lash Bitters logo, blue jacket of smaller man, blue hat etc.
Definitely needs a lot more work.