When I look around at many of the old calculators, it seems that some have paper boxes, some have hard plastic cases, and some seem to have both (hard case came in a paper box). Did all the old calculators come with these hard shells, or just certain models? Maybe it was an option?
Seems like from a collectors perspective, it would be nice to know what came with all the models inside the box as well, so you knew if you were getting everything, or what you needed to look for. These seems especially true for the manuals, where it seems that often you might have the owners manual, but not the advanced/solutions manual. Maybe this information does exist?