Silver Canada Halves

Remember, everyone has there own way of grading a coin and that should almost certainly apply to circulating coins but, should a person be referring to a MINT STATE, PL, or UNC coin then to my mind that coin should be third party graded unless it is sealed from the mint.
If a coin is shown in a raw state on ebay or elsewhere then to my way of thinking it is nothing more than a circulating coin and should be treated as such.

Are you buying to collect or for bullion value?
In a collection they are still only bullion value and no premium unless M.S.64 or better at least according to trends.
It's symantics and not proper terminology consider it raw,unc means no wear may have bag marks as you would find from mint rolls. Proof like, I understand would mean from an unciculated RCM mint set.Charltons describes it as highly polished dies and selected planchetes punched slowly. Proof condition I have always understood to be a step up and frosted in these years.I don't think it would be worth grading these years unless it's your thing.