Hello!
I have the same Albano-Waite (1968) edition you have, Didactic, and the backs of mine run the gamut, from creamy white to bright white. I can only guess that each card was printed (in duplication) on one large sheet, punched out (hence the nubs at the edges), and then assembled into a deck. I doubt all 78 cards were printed on one sheet, punched out, then assembled (like they are now with high-tech laser printers). Are there any printmakers out there that can offer an expert opinion?
I scored a printed in Belgium Albano-Waite on eBay just a few days ago (perfect condition). The cards are no where near as crisp and bright as the 1968 edition, but are worlds better than the Italy printing, which I also have. The Italy deck could be a good travel deck, meaning, they are virtually indestructible due to the heavy lamination.
Yes, USG needs to improve the quality/clarity of the Albano-Waite!