For sale here is a 1988 S$5 CAN Canadian Silver Maple Leaf. This is the first year of issue and it is housed in a brand new, blemish free slab. It is a crisp spot-free, nearly perfect coin.

Only 0.000050176% of 1988 S$5 CAN are MS-69.

It is rare to get a grade higher than MS-66 on these coins. The mint didn't strike, package or distribute them with MS-70 quality coins in mind. The Royal Canadian mint didn't really get their act together until the 2010s, and even then, their bullion was plagued with issues.

Thankfully, this is the finest known 1988.

A lot of these coins banged together in drawers and the soft metal was damaged. This can take multiple grades off a coin. Nobody ever really took care of them thinking nobody would ever collect them. The discerning collector of modern Canadian pieces knows just how rare coins like this are.

No MS-70 exist.

This coin is the best in its class. This is the only one I've ever gotten in all my years doing this. Neither you nor I will likely see another one. There are other MS-69 with spots. I've never seen one this nice before.