Contemplating if I should just keep bumping my old thread with new additions (dupes/errors) … because yeah…
anyway.>
Mattina dupe.
#50 DF is the same book as #50CD
This was a 3-variant set on release and all of them are in core as
#50AM
#50BX
#50CD
Also, while I am at it,
#50CB and #50CC are using the same front cover image.
Unsure which is correct and which is wrong but I have both blanks as well. (they are different books though very minor difference between the two)
Also, (I know this one for a fact bc if reached out to people for confirmation) there was pre-solicited artwork out there where the trade dress text was colored yellow instead of green, that version never went to print)
#50 DF is the same book as #50CD
Corrected.
#50CB and #50CC are using the same front cover image.
Used your cover for #50CB. Thank you for letting us know.
@CLZ_Rowdy Glad to help 
Next book - This one is easier-
#50 Greg Horn variants - 3 book set. 1 trade dress, 1 “Minimal Trade Dress” (RED background) and 1 “Virgin” “Purple” background.
example of the Red BG-
In CORE, the purple ( #50DE) was sharing the same UPC code as the Red variant ( #50BW )
I have submitted a correction to core so all you need to do is push it live and the UPC codes should correct the cross linking of books.
I also noticed that it appears stock images were used for the back covers and do not show the UPC codes, I will take new photos of the set and update them shortly and submit them via core update as well.
edit- for some reason it wasn’t letting me upload back covers so- here
Trade
Minimal (red)
Virgin (Purple)
Batman #50 Nick Derington
#50AE - Corrected UPC code and uploaded back cover to Core.
#50BO - Back cover submitted
#50AD - Back cover submitted
(think i "crossed the streams at first on uploading but I went through and re-corrected/submitted with the latest submissions- I assume they’re timestamped)
