No they are not the same size, and there are also variations in the size between the early and later slabs from all of the companies except ICG.
If you want to buy boxes to hold a variety of slabs your best bet are the NGC boxes. They will hold both sizes of NGC slab, all but the first and ninth generations of PCGS slab (Ninth is a large oversized specialty slab), the ICG slab, and maybe the post 2/2006 ANACS slabs. I believe it will also hold the SEGS slabs as well. None of the other companies boxes will fit anywhere near that variety of slabs.
For the NGC multicoin slabsyou have to buy their special boxes. There are no boxes that will hold the PCGS multicoin slabs. I guess they saw no reason to create one since the slabs themselves are almost unheard of.
If you want to buy boxes to hold a variety of slabs your best bet are the NGC boxes. They will hold both sizes of NGC slab, all but the first and ninth generations of PCGS slab (Ninth is a large oversized specialty slab), the ICG slab, and maybe the post 2/2006 ANACS slabs. I believe it will also hold the SEGS slabs as well. None of the other companies boxes will fit anywhere near that variety of slabs.
For the NGC multicoin slabsyou have to buy their special boxes. There are no boxes that will hold the PCGS multicoin slabs. I guess they saw no reason to create one since the slabs themselves are almost unheard of.


















