Legendary has a number of uncut panels being offered, most in a 5 x 5 quadrant array, consistent with prior panels seen by yours truly but with a bit more border area showing. Check out the green panels, which I believe show left and right borders respectively:
The second and third rows seem to show some left gutter or border area. Now look at the panel below, which has a lot of white wast area rightmost:
I don't believe they are a matched pair but they may both also hail from the top row-check out all the real estate above each side's first row above.
Now look at these two brown panels:
That's a different size panel but the left side must be an edge and the seven column view shows the repetition you would expect. Now look below:
Lots and lots of white off to the right.
So is it a sure touchdown? Not quite. There could still be a 7 x 18 arrangement or something bigger than 10 x 10 but the 1949 sets (except Magic Photo, which a actually had a first series issued in 1948) all seem to revolve around 100 subjects or a multiple thererof. X-Ray Round up had 200 cards, all printed at once no less:
While License Plates and Flags Of All Nations clocked in at 100 subjects apiece I have never seen any uncut sheets or panels for those sets. I'll keep looking but I think the 10 x 10 print array for Varsity is right.