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How do you actually determine centering ratios?
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01-27-2016, 10:30 AM
conor912
C0nor D0na.hue
Join Date: Feb 2012
Posts: 3,271
Quote:
Originally Posted by
Jewish-collector
Someone put a nice informational document on the PSA message board:
https://forums.collectors.com/messag...hreadid=897961
The back of a PSA 10 only has to be 75/25 or better?!
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