BGS 10 Pristine condition? If there the number of that specific card is BGS 10 is in double-digits, I estimate possibly up to triple (possibly more pending on the player and number in existence) of a BGS 9.5.
I find acetate cards (ie: UD Ice RCs, Trilogy Ice Scripts, etc.) would be easier to find in such a condition since the corners are usually a non-issue (of corner flaws would be extremely noticeable), you mainly would have to check for any scratches on the card surface. Of course, certain runs like 2005-06 UD Ice are centering-sensitive.
Sometimes, non-chipped Black Diamond cards can produce a BGS 10, given if the corners and edges are fine to close inspection.
Also, it can depend on the overall quality of print runs for that set. For instance, a run for a specific year's set could either have: roller marks, chipping on specific edges, crimping, etc. Of course it will also depend on how many people have sent in copies of that specific card
(and who the player is) for grading (check Beckett's grading population report).
If you want to examine your cards more closely, you will need a loupe (15x or better magnification) to find any flaws. Corner flaws are identifable to the naked eye upon close examination. This is more sure way to lower your chances of wasting money on grading a card that doesn't make the cut.
