That was part of the controversy: people weren't sure the edits were done by BAC himself, or somebody pretending to be BAC.
A lot of his older stuff was in terrible conditions: crude photocopies on torn paper.
And the later edits were sometimes very basic, like the girl on the bed with the cut off feather.
BAC used to make sometimes "alternate versions", with added or removed elements ;
for example, an additional character with speech, or laughters...
Surely because he started to make a comic strip scene, and later, remastered the scene in higher details without text for a portfolio.
Then, I think those "alternate versions" are mostly the result of the evolution of some scenes.
Also, some partial elements can be found on different scenes, slightly modified (by
BAC himself).
Else, of course, many
BAC classic artworks have been also edited by fans (mostly custom colors).
I can recognize in most cases if a
BAC artwork is original or edited by a different artist.
It's more complex to determinate if an old artwork is by
BAC or by another artist,
as his "proto-works" were more minimalist, sometimes not signed, and that other vintage artists had a similar style (
CB,
Smith,
TKL,
TR...).
Outside official
BAC artworks (those that were sold on his stores), which are very high quality,
the unofficial
BAC artworks can be high quality (Tobias Hackner original scans), medium quality (smaller resolution but still clear)
or low quality (multiple generation of Xerox copies, with dirty prints, parts nearly no longer visible or partially illisible text).
About the artwork you talk about, with "the girl on the bed with the cut off feather", I don't see which one it is...?
Is it the one with this caption : "
WHENEVER BETTY WOULD MISBEHAVE ROBERT WOULD BE FORCED TO DISCIPLINE HIS TICKLISH YOUNG WIFE" ?
I have only seen maybe two original versions of it and a colorized one, but all of them having the same details...