Alot of the times balls are called a 2nd or a blem if the label is wrong on them, just the actual words, ball is perfectly fine, some the pin and cg are miss marked, those ones can be more problems, or some blems may have like a gigantic pin, just check out the ball and try to weigh it to find out whats wrong, some are good some are bad.
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And Then...........

I left another 10 pin

yes its still abc approved, just the biggest problem you gotta check for is thumb weight and finger weight and side weight, blems can have a huge number which in that case will need to be drilled out or it will be illegal
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And Then...........

I left another 10 pin