You do not know enough about the vinyl to just arbitrarily change a copy of a title.
Are you going to tell us that you could not find the matrix number in the dead wax on Discogs?
You even ran another post here not knowing about that poster so nothing is definitive about if it even came with the copy of that title. I find stuff all the time that never came with the record but it's inside the cover so what.
The best thing you can do is leave a comment "in the comment section" under your title, catalog #, Matrix #, Label ID.
Also there is a colectors book on all Beatels records, there is also a colectors book on all records. This is were record stores get there pricing for out of the norm copies. They don't price from eBay or Discogs.