No, Al. This doesn't belong on the master set list. It's a one-time printing mistake. Not a recurring defect. Otherwise, every set would need to include every blank backed card, wrong back card, every card with a missing run of ink (on front or on back), etc. Stick with the Page/Sain errors as items for the master set list. Leave this one off it.
And there are 4 or 5 known high numbers with this same printing defect, which means there should have been at least 100 (probably 200) of them. Which also suggests the survival rate of 1952 high numbers is about 10% (probably a bit lower) of those originally printed. That would suggest ... there were 18,000 Mantle RCs that were destroyed. Think those folks are bummed about that?
Cheers,
Patrick
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