Some of the items in the unsolved
> set may have been correctly answered previously but I
> wasn't able to verify them so I've included them
> in this new post.
My one piece of insight to share on #471 is that if you look at the red numbers, they are different by 4 or 5 from the adjacent red numbers. With the exception of 9 and 0 (which are either 1 or 9 apart, depending on how you look at it.)
My gut feeling is that this dial is for remapping the 0-9 digits such that adjacent digits do not come out near each other in the remap, maybe something like a grey code. The 20-tooth cog and the microswitch-style rider look like something out of a phone pulse-switching system, although what kind of stepper switch they might control I still do not fathom.
Tim.