The larger serial display doesn't have a colon or apostrophe. Would be good to modify the datasheet to make it explicit (an image of the larger display would be good to include).
This datasheet really only appears to apply to this particular size screen, which does have the colon/apostrophe. It would be worth going through and doing a separate datasheet pointing out where the changes would need to be included for the larger screen, as well as including images showing the exact dimensions for the larger screen.
Added an issue regarding this to the hookup guide. It will be addressed there.