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Original seals were 36R5, middle one is 47R5.
I'd say the 26S6 one would have the fix, not sure the other one.
The fix in the Wall-E occurs around Nov/Dec 2015.
From your codes it looks like TLG did the rework between week 36 and week 47 of 2015.
H = Nyíregyháza, Hungary
R = Ciénega de Flores, Mexico
S = Kladno, Czech Republic
Q = Purkersdorf, Austria
B = Shenzhen, China (Not Confirmed)
M = Billund, Denmark (Not Confirmed)
O = Billund, Denmark (Not Confirmed)