W516 has long been understood to have variations in stock, ink, numbering, lettering and font. Of which there are many. The basic set, type 1, has the cards facing the right way numbered a specific way. Other iterations reverse negatives, change numbering, reverse negatives
and change numbering, reuse the image with different numbers and typefaces. And there are multiple inking schemes as well. None of the stock and ink variations are new per se, they just aren't subjects of significant collector interest and not well cataloged; let's face it, T206 this isn't. I've found them with the bright white stock as well; FWIW, I've found the white stock only with the type 1 cards and only with black ink. I think all it amounts to is a variation among print runs for type 1 cards. Some pictures:
White stock Cobb, image facing right way:
Beige stock Alexander, image facing right way:
Beige stock Johnson, image facing wrong way:
Mathewson with image wrong way, different font/numbering, blue ink:
Beige Collins, blue ink, image reversed:
