The majority of them are narrower, but not all. It may be that the first batch were designed to be cut normal, then later they altered the process. ???
Does anyone know if they altered the sheets to make the side borders narrower, or did they just cut a sliver off of each card to make them narrower?
Here are 2 more Lake scans to compare... 350 & 460 (the 350 later graded SGC-50)