Good to see some life in this thread and these cards in general.
As for the W575-1 cards that parallel the E121 Series of 120 set...they do exist but are VERY TOUGH to find and easily 90-95% are actually W501-2 cards that are labeled W575-1.
That being said, blank backed cards of the same quality images and otherwise identical to E121 Series of 120 cards are out there and they are confirmed as such by the better quality image, card stock, & the fact that they are on the same thinner card stock that E121 Series 120 (which is pretty obvious when holding a Series of 80 an Series of 120 in your hand at the same time)
So hate to be the bearer of bad news Val but you still need the Rice card.
I chose 2 "not so totally random" W575-1 (Series of 120) cards from my album to show what they look like & show the image quality vs Val's Rice he showed above
