1955 Topps (Grey backs vs. White backs?)

Hi all. Just picked up a lot of 39 1955 Topps commons (probably PSA 3-4 each) and was wondering if there is a premium on the white backs vs. the grey backs. Or vice versa. Any thoughts?
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Baseball 1937,1965-94,2008-09?
Or Regional Canadian Baseball Issues?
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Or Regional Canadian Baseball Issues?
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A variation that has been noted is card 106 sullivan. 3 different types can be found.
Steve
Steve
Or Regional Canadian Baseball Issues?
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<< <i>Hmm. Some are definately lighter than others. Then again, I do live in Canada. Could that make a difference? Were 1955 Topps released in Canada with different backs, like OPC? >>
As Steve said, there are some different tones but nothing really of importance. The '56 on the other hand, white backs command a premium.
That i am not sure of, 1952's were.
Steve
SOME white backs are worth a bit more, those numbered from 101-180,... however the whites are more common in the sequence numbered 1-100, thus the grays are slightly more expensive for that series. The whites 101-180 command MORE extra worth percentage wise, than the grays 1-100 do.
Many collectors of this set, and most type collectors who wish a certain card from 56, place very little or no additional value on either type of back color. The difference in color, though slight, is real, but not very important to many.