I think that shot of George boarding the plane is where my old off air VHS recording cut off.
Does the 16mm have bumpers for where the pledge breaks went when it aired on PBS?
Are you referring to these?; https://i.imgur.com/sXcC1OC.png
Classic Creatures aired on CBS and I don’t recall bumpers for it.
SWTJ had at least one PBS pledge break before they got to the aerial shot of the barge set. It was a black frame with the SWTJ title and added text Will return. It may have been only in prints made for PBS, but it was definitely on the film. All the VHS/LD releases don’t have it.
I still need to figure out if there are any differences in the two versions of Classic Creatures besides the closing credits. The 2011 Blu Ray set dug up an ancient video master with credits on film, but all the old video releases have video generated credits.
Thanks for posting that though!