I use Lighthouse Quadrums (square) for my more expensive coins; proof silver dollars, proof fifty cent pieces, etc. They come with many different sized foam inserts.
You can also purchase their plastic pages (three or four hole) for heavy duty albums/3 ring binders. For other coins I use 2x2 in heavy duty 3 ring binders (Home Depot).
You can also purchase their plastic pages (three or four hole) for heavy duty albums/3 ring binders. For other coins I use 2x2 in heavy duty 3 ring binders (Home Depot).