I am sure there is no "conversion factor". Each service grades acording to its own standards and within those standards the human factor still makes direct conversion difficult if not impossible.
Always try to evaluate the coin according to its own merits.
Comments
greg
www.brunkauctions.com
Always try to evaluate the coin according to its own merits.
Drunner
If your buying moderns like a 2004 proof Kennedy half, yes it will probably grade a 69 in
respectable plastic, all modern proofs are DCAM for the most part.
Treat their slabbed coins as raw, and never pay any sort of premium.
I have seen first hand, Morgans that were in 65 holders, that were cleaned AU coins.
Some how this guy ABOMB manages to sell thousands of coins every week.
Did you search SGS on this forum? There are plenty of threads to read through.