So I have in my collection March of Comics 220 but it has the Sears Department store printed on the bottom part of the cover.  My other March of Comics issues don't have retail vendors on them.  Is this a variant or is it considered just 220 and Sears had their name and advertising printed on a portion of the print run.  Love some imput on this  

I think that there are a variety of stores that had their name stamped or printed on the covers of March of Comics. I asked Pete some years ago about how ComicBase would track this, and I believe that the ultimate decision was to *not* track the different store brands as variants.