looking for help identifying a BCE-"Life with Picasso" Gilot and Lake 1966?

"Life of Picasso" Hardcover. The Jacket on my copy is clipped with the
"A book of the month club selection" just to the left of the clip on
the top of the front flap. half those selling this title are calling
their copy BCE and half aren't. At the bottom of the rear board
instead of a dot/square/leaf there is a gilt stamp number string 23266
which is matched in exactly the same position of the dust jacket (just
the number string, not in a box).

any experience anyone has had with this title I'd appreciate any info
they can offer.

thanks