Is there a standard deduction for a print "bubble?"

Assuming a card is pack fresh, centered and mint - what grade would it get with a small print bubble? Does anyone have any personal experience with this issue?
I am buying and trading for RC's of Wilt Chamberlain, George Mikan, Bill Russell, Oscar Robertson, Jerry West, and Bob Cousy!
Don't waste your time and fees listing on ebay before getting in touch me by PM or at gregmo32@aol.com !
Don't waste your time and fees listing on ebay before getting in touch me by PM or at gregmo32@aol.com !
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was at least a 9 - chance at a 10....
bubble got me 6.5
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90 ProSet Dexter Manley error
90 Topps Jeff King Yellow back
1958 Topps Pancho Herrera (no“a”)
81 Topps Art Howe (black smear above hat)
91 D A. Hawkins BC-12 “Pitcher”
If it's on the player's face and noticeable, expect a good deduction, at least 2 grades IME
It it's small and doesn't affect the appearance of the card, it could still get a 9