Some folks prefer a darker background with 71s as it is then easier to detect any white along the edges/corners. I do see on higher grade 71s where it is difficult to determine the centering when a card is scanned against a black background. Ideally a non white / non black back ground would be best, however, many sellers utilize a sheet fed scanner for efficiency reasons and the choices with most sheet fed scanners is either a black or white background.
Last edited by savedfrommyspokes; 02-12-2020 at 12:31 PM.
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