The subject is a classic one, very much in keeping with the Counter-Reformation times. Though this work may cover a secular subject, it nevertheless takes a highly moralizing tone!
A play of hands, the gazes on the faces are pretexts, it is the hands that carry out the real dialogue. The old lady chatters, the companions charm and distract, so enchanted, he gets robbed without realizing it.
Here is a complete examination from the Berger Foundation.
http://www.bergerfoundation.ch/LaTour/english/albi2.htm