My favorite B.P Grimaud deck is the Hochman L18a. There are many different versions of this deck but every copy is very rare today. The original engraved Joker was only replaced in the last versions by a more common but all other copies with the engraved Ace and Joker were made in Square and Round Corners, with plain or ornamented backs.
I hope you enjoy the pics. The first three copies with the numbered wrappers are preserved with the Georges Marteau collection in France.
Picture 1 : n°70 - Square Corners
Picture 2 : n°79 - Round Corners
Picture 3 : n°100 - Square Corners
Picture 4 : A more recent version, with a blue back and a different jokerAnother nice private version and a complete comparison with the Card Fabrique deck on this link :
http://www.dxpo-playingcards.com/jokers/grimaud_vs_card_fabrique.htm