wayne gretzky rookie card value by grade

wayne gretzky rookie card value by grade I want to get this graded. How much would the little black mark on the card hurt the grade? And how would it affect it's declared value? Thanks! 1979 Topps Wayne Gretzky #18

Name: wayne gretzky rookie card value by grade I want to get this graded. How much would the little black mark on the card hurt the grade? And how would it affect it's declared value? Thanks! 1979 Topps Wayne Gretzky #18
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SKU: 66901541141
Price: 21.97 USD
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SKU: 66901541141

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Drawing one, however

PRODUCT DETAILS Product Name Pokemon Card Game - Promo Card Pokemon Center Hiroshima Pikach

Echoing Boon: I will need to add the name this card protects to my secret notes

Nintendo Pokemon Wild Force Arbok #079/XY-P [CGC 10] Nintendo Pokemon Wild Force Arbok #079/XY-P [CGC 10] IN STOCK Estimated ship date $29.99 NOTIFY ME WHEN AVAILABLE Email address submitted