Mark Arnold recently posted a smaller version to the Harvey Comics Facebook group, and Tony Busan commented that there are four pieces in all, two round and two rectangular. Mark also posted this picture comparing the size of the two oval cases:
Mark says the smaller case is about four inches. I measured my larger case and it is around nine inches. From what I can see, the easiest way to tell the two cases apart in photos is the closure. The larger case zips all around, the smaller case has a thick strap at the top. Thank you Mark for today’s exhibit!