This is the first year of issue and it is housed in a brand new, blemish free slab. It is graded MS-68 and cert is 2918049-004. 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.
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. Please see my other listings for attractive, modern Canadian and world bullion.