https://www.numismedia.com/rarecoin...of=b&plus=noUnless you have one of the errors, it's really not worth grading any of them.
ANACS used to have a co-service with OSV (
https://www.osv.expert/), but I'm not seeing it on the website any more. OSV verified the set was original and then ANACS put the whole thing in a plastic slab.
Otherwise, you will end up with six "random" coins with adjacent certificate numbers and no other "proof" they're related.
And generally, the economics aren't there. If you submit a six-coin set to PCGS or NGC even at economy rates, it will run you $17-$23 per coin valued up to $300, $30-$40 per coin valued up to $2,500. $102 - $240 plus shipping and insurance. And add the $9 FMV of the set.
Even if you got spectacularly lucky and the quarter grades PF69DCAM, finest known, it's got a market value of under $300. The rest will be worth under $30 each.
$150 cost, 6x$30 = $180 value after grading.
I had a friend who used to make his living as a coin dealer cherry-picking old sets, sending the best coins off to be bulk graded (there is a discount for sending in 100 coins at a time, but you must have 10 or more of each type, so he sat on a lot of inventory to get to those numbers), and then selling them at coin shows. But he made that living clearing $5, $10 a coin. And the business dried up when he had seen every set in a 300-mile radius and couldn't get enough fresh material to sustain the business.
Just put it aside and enjoy it as is.
-----Burton
50 year / Life / Emeritus
ANA member (joined 12/1/1973)
Life member: Numismatics International, CONECA
Member: TNA, FtWCC, NETCC, OnLine Coin Club
Owned by four cats and a wife of 40 years (joined 1983)