I've seen that coin dealers selling graded & slabbed US Mint silver dollar proofs are all listed as PF69 or PF70. Is it safe to say all proofs bought directly from the US Mint are PF69 or PF70? I'm satisfied with keeping the coins in the Mint packaging and don't feel compelled to have them graded & slabbed. For sets, I much prefer US Mint display packaging. Thanks.
