2009 Topps Baseball Forum

I am entering some of these cards and I noticed a different shading on the backs of a couple of them. I looked through the inserts and can't find anything that these would be. Is there a parallel that I am just not seeing or is there a known coloring issue on this set?

To clarify, I mean different shadings on the same cards. Also, I have found enough within different colors that I am pretty sure it is just a printing issue. 

The only back color variation that I have found is the Target Throwback issue. The backs are an antique (or off-white). The fronts carry the vintage "Topps" logo instead of the more modern "Topps" logo.

Yeah, the target/Walmart parallels are what I figured initially. Going with what you said about target, it looks like the Walmart has a black front. I am pretty confident it's just a printing issue.